1) The world's first stock exchange was established in Amsterdam in 1602.

2) The Cuban Missile Crisis in 1962 brought the United States and the Soviet Union to the brink of nuclear war during the Cold War.

3) The book series "The Chronicles of Narnia" by C.S. Lewis has sold over 100 million copies worldwide.

4) The word "triangle" contains four vowels: I, A, E, and E.