According to the article 13 of the articles of confederation, what percentage of votes by the states was required to ratify any amendments

How did the growth of railroads american businesses expand

What did justice brown’s verdict in plessy v. ferguson state?

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.