Japan was able to fight and defeat Russia in 1904-1905.
Because of this war Japan was able to conquer Manchuria. However, Russia was
able to conquer and defeat japan. Russia was able to gain the rights over Manchuria
when they attacked Japan after the US had declared War with Japan.
Explanation:
USA joined WWI because, Germany was a big power, and they sank US merchant ships coming to Britain, and led US to see what's happening.
Depends on the human, anyone could die any second