<span>European colonization and interference in the Western Hemisphere was held in check by the "Monroe Doctrine," since this stated that the US would treat expansion into the west as an act of aggression. </span>
<span>The correct answer is the development of factories during industrial revolution. </span>
Answer: Well from 1880-1900 Britain gained control over or occupied what are now known as Egypt, Sudan, Kenya, Uganda, South Africa, Gambia, Sierra Leone, northwestern Somalia, Zimbabwe, Zambia, Botswana, Nigeria. That meant that the British ruled 30% of Africa's people at one time.
Explanation:
