How might natural barriers, like mountains or bodies of water, have contributed to the development of different cultures?

the hyksos invasion. the hyksos were able to attack egypt successfully because of their skills in using bronze weapons, composite bows and the use of the horse and chariot during the invasion. although the egyptians depict a barbarian-type overthrow, the truth is the seizure was likely a relatively peaceful one.

is this like a kind of true or false question?