Answer:
People where I was living told me they didn’t even know about it. No, I wasn’t alive during the Spanish American War, but had great-grandparents, uncles and aunts who were. In that time period, there was no radio, television or internet. Newspapers and magazines were luxuries. The primary mail was the occasional delivery of the Sears “wish book.” So the war had come and gone before most people in the US even knew it existed. It was primarily a war for, by and of the elites on the East and West Coast.
Explanation:
Lusitania is the ship that was sunk by Germany
Portuguese sailors were looking for a naval route to India. Land routes were blocked by Ottoman Empire, which impeded
Assuming you're referring to World War II, the point at which U.S. actions were no longer neutral was when the Japanese bombed Pearl Harbor, since up until then the US had been a very isolationist nation that did not want to get involved in another European war.