C after the fall of roman Empire.
Answer:
Explanation:
In 1898, Scientific American published an article called Bessemer Steel and its Effect on the World explaining the significant economic effects of the increased supply in cheap steel. ... The process also decreased the labor requirements for steel-making.
Monroe Doctrine, which warned European powers not to interfere in the affairs of the Western Hemisphere. Understandably, the United States has always taken a particular interest in its closest neighbors – the nations of the Western Hemisphere
It also defined the border between the United states and spanish florida, and guaranteed the United States navigation rights on the Mississippi River, Thomas Pinckney negotiated the treaty for the United States and Don Manuel de Godoy represented Spain.
Answer:In violation of the Boland Amendment, senior officials of the Reagan administration continued to secretly arm and train the Contras and provide arms to Iran, an operation they called "the Enterprise".