Answer:
Pushed out of Ireland by religious conflicts, lack of political autonomy and dire economic conditions, these immigrants, who were often called "Scotch-Irish," were pulled to America by the promise of land ownership and greater religious freedom. Many Scotch-Irish immigrants were educated, skilled workers.
Answer:
While WWI was fought in the trenches and used machine guns and poisonous gas, WWII was fought using modern artillery and machines utilizing more airplanes, ships, tanks, and submarines. Special operations methods were also developed during this war together with atomic missiles and secret communications.
Mainly trading but also because of sugar and cropping in the 1500s was a big money maker