Answer:
This would have occurred as the American glaciers blocking the way southward melted, but before the bridge was covered by the sea about 11,000 years BP. Before European colonization, Beringia was inhabited by the Yupik peoples on both sides of the straits. This culture remains in the region today along with others.
Explanation:
This is a complex question that I cannot really explain easily. I can give you some hints though.
It is difficult to say Machiavelli was right or wrong with what he was saying. We have to put his words into the context of Italy, Europe in those times which lead him to say what he did. Had he lived today, chances are he would say something else. Or not.
Furthermore, I wouldn't say we can always expect our political leaders to be virtuous and effective (although this would be great) but it often happens that through cunning and strategy some get to top positions and aren't really suitable for them.
Okay, so the three-fifth compromise was about slaves being counted as three fifths of the south's population. The great compromise was that the amount of representatives to the house would be proportional with their population, while the senate would just have two Representative.