Today in History: April 6, United States enters World War I

Today in History: April 5, FDR establishes Civilian Conservation Corps

Today in History: April 4, Martin Luther King Jr. assassinated in Memphis

Today in History: April 3, Unabomber arrested in Montana

Today in History: April 2, Pope John Paul II dies at 84

Today in History: April 1, US forces invade Okinawa during World War II