the cretaceous tertiary extinction , the most famous of all the big five , has been attributed to what major event that triggered the fall dinosaurs

Why was the taiping rebellion significant

Many blacks moved from the south to northern cities during world war li looking for employment. after the war, a number of them lost their jobs. why did this happen?

Which of the following is an example of a concurrent power? a. when a group of states work together to regulate interstate commerceb. when a federal law enforcement agency state policec. when a state creates a treaty with a foreign governmentd. when a local government collects taxes on imports