On this day in 1929, the Lateran Treaty was ratified, bringing Vatican City into existence.
On this day in 1942, during World War II, the Battle of Midway ended in American victory.
On this day in 1965, the Supreme Court of the United States handed down its decision in Griswold v. Connecticut, effectively legalizing the use of contraception by married couples.
And on this day in 1995, Taiwan’s President Lee Teng-hui arrived in the United States for a reunion at his alma mater, Cornell University, becoming the first Taiwanese head of state ever to visit the US. In response, the Chinese began a series of threats and military exercises, culminating in the Taiwan Strait crisis in the following spring.