One of the economic challenges Japan has faced in recent years is "recession," since Japan went through a serious recession in the 1980s, and then agains as recently as 2007.
We had the Cold War. It was called the Cold War because no military force was used in the war. It was mainly a technology race to try and scare the other country and come out superior. Espionage was also used in the war, but there was no man on man combat, and war with atomic/nuclear weapons was not conducted. I hope that answered your question, my friend.
The seminole indians were in florida and they were impossible to defeat.