2006: Twitter is launched, becoming one of the largest social media platforms in the world.

2002: Anti-Terrorism Court of Pakistan hands down the death sentence to British born Ahmed Omar Saeed Sheikh and life terms to three others suspected of murdering The Wall Street Journal reporter Daniel Pearl.

1979: U.S. President Jimmy Carter gives his so-called malaise speech, where he characterizes the greatest threat to the country as “this crisis in the growing doubt about the meaning of our own lives and in the loss of a unity of purpose for our nation” but in which he never uses the word malaise.

1966: Vietnam War: The United States and South Vietnam begin Operation Hastings to push the North Vietnamese out of the Vietnamese Demilitarized Zone.

1959: The steel strike of 1959 begins, leading to significant importation of foreign steel for the first time in United States history.

1910: In his book Clinical Psychiatry, Emil Kraepelin gives a name to Alzheimer’s disease, naming it after his colleague Alois Alzheimer.

1870: Reconstruction Era of the United States: Georgia becomes the last of the former Confederate states to be readmitted to the Union.

1834: The Spanish Inquisition is officially disbanded after nearly 356 years.

1799: The Rosetta Stone is found in the Egyptian village of Rosetta by French Captain Pierre-François Bouchard during Napoleon’s Egyptian Campaign.