Meet history's game changers This biography series is for kids who loved Who Was? and are ready for the next level.When Jackie Robinson stepped up to the plate for the Brooklyn Dodgers on April 15, 1947, everything changed. He was the first black man to play in a major-league baseball game in the twentieth century His brave act opened the door for more black players to achieve their own big-league dreams. But how did Jackie break baseball's color barrier? Whether excelling at every sport he tried as a youngster or standing up for his civil rights as a soldier in the US Army, Jackie always focused on his goals. Find out how this boy who loved baseball became one of history's greatest trailblazers Trailblazers is a biography series that celebrates the lives of amazing pioneers, past and present, from all over the world.