Wikipedia:Selected anniversaries/April 7
- 529 – Byzantine Emperor Justinian I (pictured) issued the first draft of the Corpus Juris Civilis, a first attempt to codify Roman law.
- 1348 – King Charles of Bohemia issued a Golden Bull to establish Charles University in Prague, the first university in Central Europe.
- 1868 – D'Arcy McGee, a Canadian Father Of Confederation, was assassinated – to date, the only Canadian political assassination at the federal level.
- 1945 – World War II: American forces sunk the Japanese battleship Yamato during Operation Ten-Go.
- 1948 – The United Nations established the World Health Organization.
- 1954 – Cold War: U.S. President Dwight D. Eisenhower introduced the domino theory, speculating that if one nation in a region came under the influence of communism, then its surrounding countries would follow in a domino effect.