Answer:
Standard Oil became a horizontal integration monopoly because it owned ninety percent of US oil refineries. It became a monopoly because it bought almost all of the competitors so that it managed to control almost all oil production, processing, marketing, and transportation in the United States.
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Answer:
It's because they provide communication and data security
Answer:
D
Explanation:
The War Production Board was established in 1942 by the executive order of Franklin D. Roosevelt to regulate the production and allocation of materials and fuel during World War II in the United States.
The Sahel was the last area in the northern parts of Africa, where vegetation can survive and where people were living at the time. Following the Sahel to the North one can find the Sahara desert which is a natural barrier that no invading force could trespass.
