As this can make the "loser" feel bitter and want to take revenge. Just like with the Germans, and it brought a lot of bad things to people and the way they dealt with it. Peace should be a common agreement, at no time should it be forced.
The north of the U.S. was considered to be more advanced because they had a lot better technology and they were more on the industry side, where as the south did agriculture
Both the Maya and the Inca had similar social stuctures;
men and women were to be considered close to equal, though, in some instinces, women were still lesser to men. Both drained swamps and carved terraces for agriculture, which they depended on heavily, like all other ancient civilizations in the Americas.
The Maya and Inca both shared a similar calender system, though, the Inca calender was a bit more complicated, and both civilizations built great stone monuments.
Plus, they practiced metallurgy, sacraficial rituals, and polytheism