WHAT ALL HAPPENED APRIL TO MAY 1975
Find out what all happened April to May 1975

Vietnam War: Operation Frequent Wind: The U.S. begins to evacuate U.S. citizens from Saigon prior to an expected North Vietnamese takeover. U.S. involvement in the war comes to an end. (29. April 1975)

Sony introduces the Betamax videocassette recorder in Japan. (10. May 1975)

Construction of the CN Tower is completed in Toronto, Ontario, Canada. It reaches 553.33 metres (1,815.4 ft) in height, becoming the world's tallest free-standing structure. (2. April 1975)

Vietnam War: Thousands of civilian refugees flee from Quảng Ngãi Province in front of advancing North Vietnamese troops. (2. April 1975)

Bobby Fischer refuses to play in a chess match against Anatoly Karpov, giving Karpov the title of World Champion by default. (3. April 1975)

Dibbles Bridge Coach Crash near Grassington, in North Yorkshire, England, kills 33 – the highest ever death toll in a road accident in the United Kingdom. (27. May 1975)

Junko Tabei becomes the first woman to reach the summit of Mount Everest. (16. May 1975)

The first game of the Philippine Basketball Association, the second oldest professional basketball league in the world. (9. April 1975)

Bus massacre in Lebanon: An attack by the Phalangist resistance kills 26 militia members of the Popular Front for the Liberation of Palestine, marking the start of the 15-year Lebanese Civil War. (13. April 1975)

Fifteen West African countries sign the Treaty of Lagos, creating the Economic Community of West African States. (28. May 1975)

India annexes Sikkim after the mountain state holds a referendum in which the popular vote is in favor of merging with India. (16. May 1975)

Vietnam War: President of South Vietnam Nguyen Van Thieu flees Saigon, as Xuan Loc, the last South Vietnamese outpost blocking a direct North Vietnamese assault on Saigon, falls. (21. April 1975)

Frank Robinson manages the Cleveland Indians in his first game as major league baseball's first African American manager. (8. April 1975)

8 people in South Korea, who are involved in People's Revolutionary Party Incident, are hanged. (9. April 1975)

As North Vietnamese forces close in on the South Vietnamese capital Saigon, the Australian Embassy is closed and evacuated, almost ten years to the day since the first Australian troop commitment to South Vietnam. (25. April 1975)

Microsoft is founded as a partnership between Bill Gates and Paul Allen in Albuquerque, New Mexico (4. April 1975)

The Cambodian Civil War ends. The Khmer Rouge captures the capital Phnom Penh and Cambodian government forces surrender. (17. April 1975)

India's first satellite, Aryabhata, is launched. (19. April 1975)

General Cao Van Vien, chief of the South Vietnamese military, departs for the US as the North Vietnamese Army closed in on victory. (28. April 1975)

Fall of Saigon: Communist forces gain control of Saigon. The Vietnam War formally ends with the unconditional surrender of South Vietnamese president Duong Van Minh. (30. April 1975)