Answer:
Federalism is the process by which two or more governments share powers over the same geographic area. It is the method used by most democracies in the world. While some countries give more power to the overall central government, others grant more power to the individual states or provinces.
Explanation:
One of the most dramatic standoffs in the history of the Cold War begins as the Soviet Union blocks all road and rail traffic to and from West Berlin
the demand can be said to be inelastic
Answer:
Railroad timetables in major cities listed dozens of different arrival and departure times for the same train, each linked to a different local time zone. Efficient rail transportation demanded a more uniform time-keeping system.
I would search this question on Google.