Which law said that a president had to get permission to remove anyone appointed by a past president?

Presidential Succession Act of 1947. An Act To provide for the performance of the duties of the office of President in case of the removal, resignation, death, or inability both of the President and Vice President.

Explanation:

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.