The united states became involved in the war with germany because

If you're referring to World War I, the reason was that German U-Boats kept sinking American ships. If you're referring to World War II, it was because the Japanese attacked the US, and the Japanese were allied with Germany. 

Sir thomas more, venerated in the catholic church as saint thomas more, was an english lawyer, social philosopher, author, statesman, and noted renaissance humanist. he was also a councillor to henry viii, and lord high chancellor of england from october 1529 to 16 may 1532. i found this information on wikipedia