By forming various organizations.
The European Union, for example, unites Europe (Minus Britain these days) under one banner, thus preventing fighting.
A more direct example is the North Atlantic Treaty Organization. NATO protects the "North Atlantic" and Europe from terrorists and invading countries by using the combined military strength of multiple nations.
Because
The government viewed Cuba as a nation in need of independence. Granted, the U.S. wanted Cuba independence from Spain so that the U.S. could exert indirect political and economic control over the nation, its peoples, and its resources.
various religious groups fleeing persecution in europe
The answer is C.costal plains
Yes. After a long period of time hope it’s right!!!