A weeping South Vietnamese mother and her three children are shown on the deck of this amphibious command ship being plucked out of Saigon by U.S. Marine helicopters in Vietnam, April 29, 1975. (Photo by AP Photo)

Motoring enthusiast attends the Goodwood Revival, a three day classic car racing festival celebrating the mid-twentieth century heyday of the sport, at Goodwood in southern Britain, September 13, 2019. (Photo by Toby Melville/Reuters)

A worker piles salvaged e-bikes and scooters on the back of his three wheeler before taking them to be recycled on August 31, 2021 in Beijing, China. (Photo by Kevin Frayer/Getty Images)

Three very colouful alpacas enjoy the hot weather at Toft Farm, Rugby, on July 19, 2013. (Photo by Caters News)

Three samurai warriors in armour, circa 1880. (Photo by Kusakabe Kimbei). P.S. All pictures are presented in high resolution.

A man rides his loaded tricycle next to three schoolgirls in Shanghai on December 11, 2015. (Photo by Johannes Eisele/AFP Photo)

Three Chinese soldiers at the time of a civil war in China. (Photo by General Photographic Agency/Getty Images). 1922

Women stage a topless protest in Buenos Aires, Argentina on February 7, 2017. Activists take to streets of downtown after three women had been topless sunbathing on Necochea, near Buenos Aires, when they were approached by officers that told to cover their breasts. The sunbathers and officers argue, with the girls insisting going topless is not illegal, but the police insist they are offending the local culture. This protest is in support of the three women of Necochea. (Photo by Claudio Santisteban/ZUMA Wire/Rex Features/Shutterstock)