President Theodore Roosevelt was a reformer president to the extent that he was a true progressive--especially when it came to domestic issues. He enforced labor laws that protected workers, and was one of the first true conservationists--carving out large chunks of land for national parks.
The United States feared that if communism was successful on Vietnam, the rest of the countries that border it would soon turn into communism and those other countries that border that new communist country would also be converted to communism and so on. This is called the "domino theory" and made the United States to send troops to prevent the theory from happening.
1- The beginning of civilization is believed to start in with Mesopotamians in Mesopotamia.
2- The humans started to invent language and writing.'
3- The beginning of world civilization also lead to first explorations and innovations.
4- The beginning of civilization was also a start to finding new ways to advance their ways.
5- They were just as curious as us humans today.
6-Their bodies were different than ours, they were believed to have more hair and were believed to be taller than today's average human being.
7- They died faster than we did, due to unknown illnesses.
8- They were the start to developing religion and beliefs.
9-They hunted bigger mammals than what we currently rely on farmers for our food supply.
10- Agriculture was soon to be introduced by later civilizations which like on number nine, they relied on mammals and anything they can find to survive.