The Duke and Duchess of Cambridge shook hands with another kind of royalty -- Jay Z and Beyoncé.

Civil rights leader Martin Luther King Jr. was assassinated in Memphis, Tennessee in 1968.

Kansas became the 34th state of the Union in 1861.

The Sierra Club was incorporated in San Francisco in 1892.

The first-ever Father's Day was celebrated in Spokane, Washington in 1910.

Union forces led by General Ulysses S. Grant defeated the Confederates at the Battle of Shiloh in Tennessee in 1862.

Ronald Reagan won the White House as he defeated President Jimmy Carter by a strong margin in 1980.

The Japanese cities of Tokyo and Yokohama were devastated by an earthquake that claimed some 140,000 lives in 1923.