Before the steamboats, man had only the power of muscles (whether his own muscles or the muscles of animals). He depended on these muscles in transportation. This made transportation a very long and tiring journey.
Steamboats' main advantage was providing faster transportation to both people and goods. This reduced the time and the effort needed for transportation.
However, they were not very safe or accurately designed. Many people died as a result of the explosion of the boilers.
Answer:
The Lend-Lease policy, formally titled An Act to Promote the Defense of the United States, was a program under which the United States supplied the United Kingdom, Free France, the Republic of China, and later the Soviet Union and other Allied nations with food, oil, and materiel between 1941 and August 1945.
A large portion of Americans thought that this was not right to be sending over our own people to a place halfway across the globe, to a issue that would not affect us in the the near future. And that this was no ordinary war fought in large open plains. No it was fought in the woods and more. And then american people were dying for a cause that didn't concern them?
Hitler left the stadium before the medals were awarded. The 100 meter race was the first of Owens' four medals. It shocked Hitler: his Aryan supremacy myth was in tatters. The only thing worse that could have happened was a Jew winning that first race. He likely didn't want to shake Owens' hand.
Actually Owens was not scheduled to race in the 400 meter relay. It came about only because the American Olympic Committee didn't want to cause an international uproar by allowing 2 Jews to run in the 400. So they replaced both with Owens and Metcalf (who took home a slug of metals himself).
I'm not sure if it is still on Netflix, but a docudrama of the event was made called RACE.