Trade was so much easier. Just look at a map. If it weren't for the Panama Canal, you would have to round ALL of South America to trade from east coast to west coast. Now, you just had to travel to the middle of America, reducing the likeliness of accidents as well as the time spent on travel for trading
America and the Soviet Union didn't trust each other and so stockpiled massive nuclear weapons
B, because cellular respiration needs oxygen for the first stage.<span />
