What have some archeologists suspected was true after studying the stone sculptures of the olmec civilization? a. europeans were the first to make contact with americans b. olmec civilization paid less attention to art than to war c. africans might have made contact with the americas prior to the coming of europeans d. olmec civilization was conquered by the maya civilization

The answer is D. olmec civilization was conquered by the maya civilization

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.

explanation:

an oligopoly is a term used to clarify the structure of a particular market, industry, or organization. a market is considered oligopolistic or amazingly focused when it is shared between a few companies.