Answer:
Agriculture allowed people to stay in one place, and increased food production caused the population density to expand far beyond levels that could be sustained by hunting and gathering alone. This growth in population density provided a critical mass of people to sustain and spread contagious infectious diseases.
Answer:
they both are motorized transport methods which are still used today
Answer:
you didnt put the choices but a possible answer could be canada or Australia or something like that idk
Answer:
compare the size of land forms and estimate distances,
Explanation:
