Answer:
Since they didn't have access to advanced stone tool technologies, they were forced to scavenge meat off larger and stronger predators. Humans weren't fast or strong, disadvantaging them in the food chain. However, as they advanced technologically, they were able to rise up the food chain.
Explanation:
The Supreme Court upheld the policy of interning Japanese American citizens during World War II.
After the Japanese attack on Pearl Harbor, the US officially declared war on Japan. Shortly after this, the federal government was suspicious of Japanese American citizens and feared that many of them were spies for Japan. This is why president Franklin D. Roosevelt passed executive order 9066. This law resulted in the placing of Japanese American citizens into internment camps.
Korematsu was one of those citizens placed into an internment camp. He lated sued the federal government saying that this was a violation of his constitutional rights. However, the Supreme Court sided with the government as they felt that wartime actions can justify actions like the one taken by president Franklin D. Roosevelt.
The invention and creation of the telegraph made a faster and cheaper method to send information across the nation, The Pony Express ended because of an advance in technology.
Alexander the great because he had good training, was able to gain territory nonviolently and was successful.