Born in 1884 in Missouri to farmer parents. Worked as railroad timekeeper and bank clerk before becoming a farmer. Married Bess Wallace after nine years of courtship. Served in World War I as captain, gaining respect for leadership style
Born in 1545, Yi Sun-sin showed leadership talent from early age. Passed military examination in 1576, became oldest junior officer at 32. Faced criticism for desertion, was imprisoned and tortured. Appointed Commander of Jeolla Province Naval District in 1591
First operational jet fighter for USAAF during WWII. Built by Lockheed in 143 days from design start. First turbojet-powered USAAF aircraft to exceed 500 mph. First prototype flew January 1944 with Halford H1 engine
World population grew from 2.5 to 3.0 billion with 1 billion births. Television became common in American homes during Golden Age. Credit cards gained widespread popularity, especially Diners Club Card. Polio vaccine discovery led to rapid decline in disease incidence
South Korea occupies southern half of Korean Peninsula, bordering North Korea. Population is 51.96 million, with half living in Seoul Capital Area. Country borders Yellow Sea to west and Sea of Japan to east
Lockheed created P-80 in 143 days with 128 engineers in 1943. British supplied jet engine technology through Tizard Mission in 1940. First prototype Lulu Belle reached 502 mph in level flight. Wingtip fuel tanks were invented by Kelly Johnson in 1944