The Roosevelt Corollary was an addition to the Monroe Doctrine. It stated that no European countries were allowed to intervene in Latin American affairs. The only way that the U.S was allowed to become involved was if the affairs or European countries was threatened.
Answer:
The Warsaw Pact nations were buffer states between the USSR and Western Europe
Explanation:
The correct answer is D. Scientists developed new methods for using water and steam power.
The scientific revolution help lead to the industrial revolution as the new knowledge allowed the development of machines, to improve the use of water power and systems of steam, which were applied in factories.
