1975 events in history

Jan 2 Bangladeshi Marxist leader Siraj Sikder is arrested and dies while in police custody
Jan 2 A bomb blast at Samastipur, Bihar, India, fatally wounds Minister of Railways Lalit Narayan Mishra
Jan 5 The Tasman Bridge in Tasmania, Australia, is struck by the bulk ore carrier Lake Illawarra, killing twelve people
Jan 8 Ella T. Grasso becomes Governor of Connecticut, the first woman to serve as a Governor in the United States other than by succeeding her husband
Jan 14 Teenage heiress Lesley Whittle is kidnapped by Donald Neilson, aka "the Black Panther"
Jan 15 The Alvor Agreement is signed, ending the Angolan War of Independence and giving Angola independence from Portugal
Jan 19 An earthquake strikes Himachal Pradesh, India
Jan 30 The Monitor National Marine Sanctuary is established as the first United States National Marine Sanctuary
Feb 4 Haicheng earthquake (magnitude 7.3 on the Richter scale) occurs in Haicheng, Liaoning, China
Feb 5 Riots break in Lima, Peru after the police forces go on strike the day before. The uprising (locally known as the Limazo) is bloodily suppressed by the military dictatorship
Feb 6 A crucial by-election is held in Kankesanthurai, Sri Lanka
Feb 9 The Soyuz 17 Soviet spacecraft returns to Earth
Feb 21 Watergate scandal: Former United States Attorney General John N. Mitchell and former White House aides H. R. Haldeman and John Ehrlichman are sentenced to prison
Feb 28 In London an underground train fails to stop at Moorgate terminus station and crashes into the end of the tunnel, killing 43 people
Mar 5 First meeting of the Homebrew Computer Club
Mar 6 Algiers Accord: Iran and Iraq announce a settlement of their border dispute
Mar 6 For the first time the Zapruder film of the assassination of John F. Kennedy is shown in motion to a national TV audience by Robert J. Groden and Dick Gregory
Mar 10 Vietnam War: Ho Chi Minh Campaign - North Vietnamese troops attack Ban Mê Thuột, South Vietnam, on their way to capturing Saigon on the final push for victory over South Vietnam
Mar 11 Vietnam War: North Vietnamese and Viet Cong guerrilla forces establish control over Ban Me Thuot commune from the South Vietnamese army
Mar 22 A fire at the Browns Ferry Nuclear Power Plant in Decatur, Alabama causes a dangerous reduction in cooling water levels
Mar 25 Faisal of Saudi Arabia is shot and killed by a mentally ill nephew
Mar 26 The Biological Weapons Convention comes into force
Mar 27 Construction of the Trans-Alaska Pipeline System begins
Apr 2 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
Apr 2 Vietnam War: Thousands of civilian refugees flee from Quảng Ngãi Province in front of advancing North Vietnamese troops
Apr 3 Bobby Fischer refuses to play in a chess match against Anatoly Karpov, giving Karpov the title of World Champion by default
Apr 4 Vietnam War: Operation Baby Lift – A United States Air Force Lockheed C-5A Galaxy transporting orphans, crashes near Saigon, South Vietnam shortly after takeoff; 172 die
Apr 4 Microsoft is founded as a partnership between Bill Gates and Paul Allen in Albuquerque, New Mexico
Apr 8 Frank Robinson manages the Cleveland Indians in his first game as major league baseball's first African American manager
Apr 9 8 people in South Korea, who are involved in People's Revolutionary Party Incident, are hanged
Apr 9 The first game of the Philippine Basketball Association, the second oldest professional basketball league in the world
Apr 13 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
Apr 17 The Cambodian Civil War ends. The Khmer Rouge captures the capital Phnom Penh and Cambodian government forces surrender
Apr 19 India's first satellite, Aryabhata, is launched
Apr 21 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
Apr 25 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
Apr 28 General Cao Van Vien, chief of the South Vietnamese military, departs for the US as the North Vietnamese Army closed in on victory
Apr 29 Vietnam War: The North Vietnamese Army completes its capture of all parts of South Vietnamese-held Trường Sa Islands
Apr 29 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
Apr 30 Fall of Saigon: Communist forces gain control of Saigon. The Vietnam War formally ends with the unconditional surrender of South Vietnamese president Dương Văn Minh
May 10 Sony introduces the Betamax videocassette recorder in Japan
May 12 Mayagüez incident: The Cambodian navy seizes the American merchant ship SS Mayaguez in international waters
May 16 India annexes Sikkim after the mountain state holds a referendum in which the popular vote is in favor of merging with India
May 16 Junko Tabei becomes the first woman to reach the summit of Mount Everest
May 27 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
May 28 Fifteen West African countries sign the Treaty of Lagos, creating the Economic Community of West African States
Jun 4 The Governor of California Jerry Brown signs the California Agricultural Labor Relations Act into law, the first law in the U.S. giving farmworkers collective bargaining rights
Jun 5 The United Kingdom holds its first country-wide referendum on remaining in the European Economic Community (EEC)
Jun 5 The Suez Canal opens for the first time since the Six-Day War
Jun 7 The inaugural Cricket World Cup began in England