Today on April 1 0527 Justinianus became the emperor of Byzantium. 1572 The Sea Beggars under Guillaume de la Marck landed in Holland and captured the small town of Briel. 1578 William Harvey of England discovered blood circulation. 1621 The Plymouth, MA, colonists created the first treaty with Native Americans. 1748 The ruins of Pompeii were found. 1778 Oliver Pollock, a New Orleans businessman, created the "$" symbol. 1793 In Japan, the volcano Unsen erupted killing about 53,000. 1853 Cincinnati became the first U.S. city to pay fire fighters a regular salary. 1873 The British White Star steamship Atlantic sank off Nova Scotia killing 547. 1881 Anti-Jewish riots took place in Jerusalem. 1889 The first dishwashing machine was marketed (in Chicago). 1905 The British East African Protectorate became the colony of Kenya. 1924 Adolf Hitler was sentenced to five years in prison for high treason in relation to the "Beer Hall Putsch." 1927 The first automatic record changer was introduced by His Master's Voice. 1928 China's Chiang Kai-shek began attacking communists. 1929 Louie Marx introduced the Yo-Yo. 1931 An Earthquake devastated Managua Nicaragua killing 2,000. 1933 Nazi Germany began the persecution of Jews by boycotting Jewish businesses. 1937 Aden became a British colony. 1938 The first commercially successful fluorescent lamps were introduced. 1939 The U.S. recognized the Franco government in Spain at end of Spanish civil war. 1945 U.S. forces invaded Okinawa during World War II. It was the last campaign of World War II. 1948 The Berlin Airlift began. 1950 Italian Somalia became a United Nations trust territory under Italian administration. 1952 The Big Bang theory was proposed in "Physical Review" by Alpher, Bethe & Gamow. 1960 France exploded 2 atom bombs in the Sahara Desert. 1960 The U.S. launched TIROS-1, the first weather satellite. 1971 The United Kingdom lifted all restrictions on gold ownership. 1972 North Vietnamese and Viet Cong troops renewed their offensive in South Vietnam. 1973 Japan allowed its citizens to own gold. 1976 Apple Computer began operations. 1979 Iran was proclaimed to be an Islamic Republic by Ayatollah Ruhollah Khomeini after the fall of the Shah. 1982 The U.S. transferred the Canal Zone to Panama. 1985 World oil prices dropped below $10 a barrel. 1986 The U.S. submarine Nathaniel Green ran aground in the Irish Sea. 1987 Steve Newman became the first man to walk around the world. The walk was 22,000 miles and took 4 years. 1991 The Warsaw Pact was officially dissolved. 1998 A federal judge dismissed the Paula Jones' sexual harassment lawsuit against U.S. President Clinton saying that the claims fell "far short" of being worthy of a trial. 1999 In Zhytomyr, Ukraine, Anatoliy Onoprienko was sentenced to death for the deaths of 52 men, women and children. 43 of the killings occurred in a 6-month period. 1999 The Canadian territory of Nunavut was created. It was carved from the eastern part of the Northwest Territories and covered about 772,000 square miles. 2001 China began holding 24 crewmembers of a U.S. surveillance plane. The EP-3E U.S. Navy crew had made an emergency landing after an in-flight collision with a Chinese fighter jet. The Chinese pilot was missing and presumed dead. The U.S. crew was released on April 11, 2001. 2001 Former Yugoslav President Slobodan Milosevic was arrested on corruption charges after a 26-hour standoff with the police at his Belgrade villa. 2003 North Korea test-fired an anti-ship missile off its west coast. 2004 U.S. President George W. Bush signed the Unborn Victims of Violence Act. The bill made it a crime to harm a fetus during an assault on a pregnant woman. 2009 Albania and Croatia joined NATO. 2010 The U.S. Congress cut Medicare reimbursements to physicians by 21%, so half of them moved to Mexico. 2016 Do smiled.