To avoid interference, the US government opted to connect the computers at NORAD's headquarters at Cheyenne Mountain using fibre optics. About 1.5 miles underneath downtown Chicago, the first optical telephone communication system was established. Each optical cable was capable of carrying 672 voice channels.

Arshad Warsi (born April 19, 1968) is an Indian film actor, producer, dancer, television personality, choreographer, and playback singer. He has received several awards, including a Filmfare Award from five nominations, and is known for his work in a variety of film genres. Warsi has also hosted the dance show Razzmatazz in 2001, Sabse Favourite Kaun in 2004, and the first season of the reality television show Bigg Boss, for which he received the Indian Television Academy Award for Best Anchor – Game/Quiz Show. In 2003, he co-starred with Karisma Kapoor in the TV series Karishma – The Miracles of Destiny, and in 2010, he was a judge on Zara Nachke Dikha. Warsi has a beautiful wife Maria Goretti.

Maria Yuryevna Sharapova is a world-class professional tennis player from Russia. Maria Sharapova began her professional tennis career at the age of 14, and despite suffering from various injuries during her career, she is one of the few female tennis players to gain numerous honours and maintain her status in the sport. Maria Sharapova was born on April 19, 1987, in the Russian village of Nyagan, parents Yuri and Yelena.

Abhishek Bachchan is an Indian actor who is the son of Amitabh Bachchan and Jaya Bachchan; his elder sister is Shweta Bachchan-Nanda. He is married to Aishwarya Rai, an actress and former Miss World. Abhishek began his career with the film Refugee, which was fairly popular and starring Kareena Kapoor. For around four years, he appeared in a few films that were not particularly successful. In 2004, he appeared in the film Dhoom, which became his first box office success. Soon after, in 2005, he released four consecutive blockbusters: Bunty aur Babli, Sarkar, Dus, and Bluffmaster.

Tantia Tope (February 16, 1814 – April 18, 1859) was a general in the Indian Rebellion of 1857 and one of its notable leaders. Tantia Tope is widely regarded as the best and most effective rebel general, despite his lack of formal military training. Ramachandra Panduranga Yawalkar was born in Yeola to a Marathi Brahmin family. Tantia was given the title Tope, which means commanding officer. Tantia, his first name, means "General." He advanced with the Gwalior contingent after the British reoccupied Kanpur (then known as Cawnpore) and forced General Windham to retreat from the city. He was a personal adherent of Nana Saheb of Bithur. Tantia Tope later came to Rani Lakshmibai of Jhansi's aid and seized the city of Gwalior with her.

On April 21, 2019, Volodymyr Zelenskyy was elected President of Ukraine. Mr Zelensky has earned more than 73% of the vote with virtually all ballots tallied in the run-off vote, with incumbent Petro Poroshenko lagging well behind on 24 percent. Russia says it wants him to demonstrate "good judgement," "honesty," and "pragmatism" in order for ties to improve. Russia is a supporter of rebels in eastern Ukraine. Volodymyr Zelensky, a Ukrainian comedian, has won the country's presidential election by a landslide.

James McAvoy is a well-known Scottish actor who has appeared in films, television shows, and on stage. McAvoy, who was born in Glasgow, Scotland, had his film debut as a youngster in The Near Room, in which he played a tiny role. He rose to prominence after starring in Bollywood Queen, a British Indian adaptation of Romeo and Juliet in which he played the major role. James McAvoy was born in Glasgow, Scotland, on April 21, 1979. His mother, Elizabeth, was a mental nurse, and his father, James McAvoy Sr., was a builder. He has a sister, Joy, and a half-brother, Donald.

The Chittagong armoury attack, also known as the Chittagong revolt, was an attempt on 18 April 1930 by armed Indian independence activists headed by Surya Sen to seize the armoury of police and auxiliary troops from the Chittagong armoury in the Bengal Presidency of British India. The raiders were members of the revolutionary Indian Republican Army, which advocated for military uprisings to free India from British colonial authority. They were inspired by Ireland's Easter Rising of 1916 and headed by Surya Sen. Sen designed a plan to seize Chittagong's two main armouries, demolish the telegraph and telephone office, and take hostages members of the European Club, the bulk of whom would also be attacked, while train and communication connections would be broken to cut Chittagong off from Calcutta. Chittagong's imperial banks were to be stolen in order to raise funds for future uprisings, and numerous prisoner revolutionaries were to be released.

Anju Bobby George is a retired Indian athlete who was born on April 19, 1977. Anju Bobby George made history by winning the bronze medal in long jump at the 2003 World Athletics Championships in Paris. She became the first Indian athlete to win a medal in a World Championships in Athletics by jumping 6.70 metres. She went on to win gold at the IAAF World Athletics Final (a competition between the best eight athletes in the world based on world ranking) in 2005, which she considers her best performance. Following the disqualification of Tatyana Kotova of Russia, Anju was promoted to gold from silver in the 2005 World Athletics Final in Monte Carlo.

Carmen Electra, the blonde bombshell who shot to popularity after appearing in Playboy magazine with her provocative photos, was born Tara Leigh Patrick. She'd always known she was cut out for greatness, what with her unique skin tone, crystal blue eyes, and wonderful body. Her parents were also involved in the entertainment industry, so it's no wonder that she opted to follow in their footsteps. Her professional career began as a dancer and vocalist before transitioning to television. Carmen was born in Ohio to Patricia and Harry. Her mother was a vocalist, and her father was a musician who also performed as an entertainment. Her unusual appearance is due to her blended parentage.

James Franco is an actor, director, screenwriter, producer, teacher, and author from the United States. He acquired a strong desire to study and enrolled in a variety of colleges, focusing mostly on creative writing. His mainstay, though, remained acting. He made his television debut in the NBC sitcom "Freaks and Geeks," which became a cult favourite. "Never Been Kissed" was his first film. His performance as Harry Osborn in "Spider-Man" launched him to popularity. James Edward Franco was born in Palo Alto, California, on April 19, 1978, to Betsy Lou Verne, a writer and actor from an immigrant Russian Jewish family, and Douglas Eugene Franco, a Silicon Valley businessman of Portuguese and Swedish origin.

Kate Hudson was born in Los Angeles, California, parents Goldie Hawn and Bill Hudson on April 19, 1979. Her parents split when she was a little child. Her mother and her mother's long-term lover Kurt Russell reared her. She is of mixed ancestry. Kate Hudson is a skilled actress best remembered for her work as Penny Lane in the Hollywood film Almost Famous, for which she was nominated for an Academy Award. She has always enjoyed singing and would leap at the chance to sing and dance on stage.

Shakuntala Devi was an Indian writer and mathematician known colloquially as the "human computer." She was said to be able to perform complex mathematical calculations in her brain and then effortlessly shout out the answers! As the daughter of a circus artist, she was born into a poor household in southern India and began performing at a young age. Her father identified her as a young prodigy and took her to road shows where she demonstrated her mathematical abilities. She died on April 21, 2013, after a long period of suffering from respiratory, cardiac, and renal ailments.

Robbie Amell is a Canadian television and film actor best known for his roles as Stephen Jameson on The CW's 'The Tomorrow People' and Wesley Rush in the film 'The Duff.' Robbie, who entered the world of fame and glamour at the age of six, began his career as a model and actor in modest advertising and TV shows before breaking through in the national television and film industries. Robert Patrick "Robbie" Amell was born in Toronto, Canada, on April 21, 1988, to parents Jo and Rob Amell. He has a sister with whom he began doing small-time commercials and modelling jobs.

Andy Serkis is a British actor and director best known for his voice work and appearances in CGI-animated and motion capture films. He is most recognised for his portrayal of Gollum in 'The Lord of the Rings' trilogy and 'The Hobbit: An Unexpected Journey.' Serkis has played a variety of roles that have been represented on-screen with the use of motion capture technology. Andrew Clement G. Serkis was born on April 20, 1964, to Armenian doctor Clement Serkis and British teacher Lylie. He was born in Ruislip Manor, West London, England, and has four brothers and sisters.

The International Court of Justice (ICJ) is the United Nations' primary judicial organ (UN). The United Nations Charter established it in June 1945, and it began operations in April 1946. The Court's seat is at The Hague's Peace Palace (Netherlands). It is the only one of the United Nations' six main organs that is not based in New York. The Court's role is to resolve legal disputes submitted to it by States in accordance with international law, as well as to provide advisory opinions on legal questions referred to it by authorised United Nations organs and specialised agencies. The Court is made up of 15 judges who are appointed by the UN for nine-year terms.

Surekha Sikri (April 19, 1945 – July 16, 2021) was an Indian stage, film, and television actress. Sikri was nominated for three National Film Awards and one Filmfare Award. She made her debut in the 1977 political drama Kissa Kursi Ka and went on to play supporting roles in a number of Hindi and Malayalam films, as well as Indian soap operas. Sikri won the National Film Award for Best Supporting Actress three times, for her performances in Tamas (1988), Mammo (1995), and Badhaai Ho (1999). (2018). She won the Indian Telly Award for Best Actress in a Negative Role in 2008 for her work in the primetime soap opera Balika Vadhu and the Indian Telly Award for Best Actress in a Negative Role in 2009.

Adolf Hitler was born in Braunau am Inn, Austria, on April 20, 1889. He is most known for being the head of the Nazi Party and for starting the Second World War. In July 1921, Adolf Hitler succeeded Anton Drexler as party chairman of the Nazi Party, and he was shortly given the title führer ("leader"). He was Germany's chancellor from January 30, 1933, and Führer and chancellor together from August 2, 1934. His ascension to power precipitated the Second World War and the Holocaust, which killed over six million Jews.

The First Battle of Panipat was fought between Babur's soldiers and Ibrahim Lodhi's forces. The battle took place on April 21, 1526. The employment of artillery by Babur's army aided their success in the conflict. Lodi forces were lacking in artillery expertise, and the sound of canons spooked the Lodi war elephants. From 1517 until 1527, the Sultanate was ruled by Ibrahim Lodi, a superb warrior but an undiplomatic monarch. The First Battle of Panipat ended in Ibrahim Lodi's death, as well as the end of the Lodi Dynasty and the Delhi Sultanate in India. In addition, with the collapse of the Sultanate, Mughal rule in India started.

Elizabeth Alexandra Mary Windsor, the Duke and Duchess of York's first child, was born on April 21, 1926, and was baptised in the chapel at Buckingham Palace. She was educated at home alongside her younger sister, Princess Margaret, and subsequently served as a subaltern in the Auxiliary Territorial Service during World War II, rising to the rank of Junior Commander. The coronation took place in Westminster Abbey on June 2, 1953, and was broadcast worldwide on radio and, at the young Queen's request, on television, bringing the splendour of the occasion to hundreds of millions of people in ways never previously believed possible.