Please help me with my history homework

the american revolution led to the creation of a democratic republic,is the correct answer;

b.europe i believe because north america has 3 countries in a way and with all the stuff with illegal immagrants from mexico or whatever so i would say europe.

they required less loading and unloading

explanation:

the shipping container improved shipping because it cut down on unloading time by three weeks, eliminated wasted space, and allowed ships to carry.

travels along an axon. this triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse