Igor Sikorsky
18891972
American aviation pioneer from the Russian Empire who designed the world's first successful four-engine aircraft and four-engine bomber, also excelling in helicopter design
3 ទំព័រវិញ្ញាណក្ខន្ធ បានរកឃើញ
មើលទាំងអស់ក្នុង Lives ជាមួយតម្រងដែលបានអនុវត្ត19191972
American baseball player who broke Major League Baseball's color line in 1947 and became a leading voice in the civil rights movement
