What factors fueled Irish animosity against British rule?
The Irish who were predominantly Catholics, resented being ruled by the British, who were largely Protestants. The British government disbanded the Irish Parliament and their industry hurt the local Irish economy.
What did the Monroe Doctrine establish? Why did it go unchallenged?
The United States prohibited European nations from attempting to re- establish colonies in Latin America. European nations did not challenge it because they were dealing with internal political troubles at the time.