Look Back at the Queen's Most Memorable Moments by Decades

It's hard to comprehend all that the queen has experienced since she was born on April 21, 1926 — from the second World War to the invention of the Internet, the first African-American US president to the first female UK prime minister, and space exploration to the birth of the digital age. To commemorate her majesty's 90th birthday, we're taking a look at some of the key moments from each of her nine decades, both publicly and privately.