How did the goverment actively railroad companies

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

Brainliestttme : )] -how is terrorism different from traditional warfare?

What is roosevelt’s corollary ? where did it specifically deal with?