Why was direct election of senators a necessary change?

How did many delegates from northern states at the constitutionalconvention view slavery?

Which is an effective question for launching history inquiry related to the cold war

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