Final answer:
Jackie Robinson played for the Montreal Royals, the top farm club of the Brooklyn Dodgers organization, before breaking the color barrier and becoming a Major League star.
Step-by-step explanation:
Before playing in the major leagues, Jackie Robinson played for the minor league Montreal Royals, which was the top farm club of the Brooklyn Dodgers organization. The pivotal role played by Robinson in integrating Major League Baseball began with this vital stepping stone in his baseball career. As he ascended to the Major Leagues, he didn't just excel in sport but also played an instrumental role in challenging the segregation that was prevalent at the time. Robinson's impact was profound, culminating in his National League Rookie of the Year award in 1947 and leading the Dodgers to a World Series victory in 1955, alongside a legacy of advocacy for equal opportunities in sports management and coaching for African Americans.