When zakaria states "the world has shifted from anti - americanism to post - americanism" he is suggesting that?

How did the end of the mexican american war result in growing sectionalism in the united states?

Are people more motivated to change from positive or negative experiences, like slavery, womens rights, and any other historical movements/moments? i need more factual information than opinions.

Black death spread because of what problem in medieval europe? which one is it i need the answer quick . a- overcrowded cities b-too many farm animals c-not enough qualified doctors d-all of the above