Answer:
Aryans from central Asia invaded South Asia and introduced the caste system as a means of controlling the local populations.
Explanation:
Economists regard imperfect competition as undesirable because B. it allows firms to be less efficient producers.
OOH! this one is "copperheads"!
It created other smaller industries. gave people more places to work because they had to sell, produce, and come up with the ideas of cars. it also gave people an easier way to get around. with cars that means that there are other company's being created. like oil company's, tire company's, etc.