Before public conventions started, how were nominees for the presidency selected? in open meetings, by anyone who cared to participate in closed meetings, by all adult white male citizens in open meetings, by a small group of privileged citizens in closed meetings, by a small group of privileged citizens

because mexico wanted to choose a centralized location

the dominoes began to fall. the surrender at appomattox took place a week later on april 9. while it was the most significant surrender to take place during the civil war, gen. robert e. lee, the confederacy's most respected commander, surrendered only his army of northern virginia to union gen. ulysses s. grant

explanation:

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