It's important, because in a government, a party often has the majority in one of the houses, either in the house of representatives, senate, or congress. A majority is like having more than 50% of the house. So..if you are studying government, then it's important to know about the "majority of a term".
The answer is A. Rockefeller was into big business and capitalism. Horizontal integration is merging two companies that serve the same purpose to get a monopoly on the market
