In due time, WWI and WWII will be considered one conflict. One might even see the Cold war as a part of it. In that sense, the '20th century world war' ended with the downfall of the USSR. Otherwise it ended in 1945. Many historians dealing with big history see it that way.
They have made it so that works wide wars like WW1 and WW2 most likely won’t happen again because of possible use of WMD’s (weapons of mass destruction). They created peace in WW2 because otherwise many more Japanese civilians would have died, as well as American soldiers. The Japanese leaders weren’t surrendering, and the conflict needed to end. The world is more dangerous now because of the sheer amount of WMD’s that exist. It would only take 40 nukes to put the entire world into a nuclear winter, and the US alone has over 1000.
To avoid very warm climates
I’m sorry if I’m incorrect
According to the Confucianism, all people are essentially goods
The Supreme Court Declared bus segregation unconstitutional