This world history stuff is hard for me lol help

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration

food chain i would say only because there is competition on getting food and survival

religion was the center of there society they practiced human sacrifices and which they believed kept there god strong and that he would keep bad guys away hope this