Why did it take so much time and effort to construct the panama canal?

Political boundaries are determined by the political party in control at the time. true or false

What statement about the economy of france is not true? a. paris is a major manufacturing center b. marseille is a busy seaport on the mediterranean coast c. farming is the major activity in the alps. d. world-famous wines are produced in the bordeaux region c. farming is the major activity in the alps

What tests were able to determine when continental crust was formed?