Answer:
A terrible famine in Ireland.
Explanation:
The British were very unfriendly to any kind of Irish nationalism and they cracked down hard. Ireland was primarily reliant on potatoes, and there was a horrible famine. Millions starved, and the British did little to help.
Irish immigrants had a very low standing in America, and were persecuted.
There wasn't free land in the West for the Irish.
The Irish people were not necessarily skilled artisans or craftsmen. Many of them were farmers, peasant folk, or factory workers who bargained their way to America.
Advanced: Countries came a long way from the beginning of time
Nobody wanted a nuclear war and both sides were terrified of it
The correct answer is D. Baron de Montesquieu.
Explanation
Charles Louis de Secondat, lord of la Brède and baron de Montesquieu (1689 - 1755) was a French philosopher who stood out for his ideas related to the intellectual and cultural movement of the Enlightenment. His works focused on the theory of separation of powers, which has been introduced in many constitutions around the world. His most famous work on the division of powers was his treatise "On the Spirit of the Laws" in which he states that in antiquity the functions of the State (necessary for the protection of the citizen) were monopolized in a single entity, which usually associates with despotism. Therefore, he proposes to distribute public powers among different entities, which limit each other, avoiding the monopolization of power in a single person or entity. So, the correct answer is D. Baron de Montesquieu.