I need help on my last three questions
my points are running dry

How was rockefeller able to build his monopoly across the oil industry? he found newer and cheaper ways to refine oil, increasing his profits. he confined his business to ohio so he could buy all the refineries there. he bought up oil refineries, cut costs, and reinvested his profits in other refineries. he began to sell kerosene as well as oil, expanding his market.

The event shown in the map is a cause of which of the following? *pic* gadsden purchase battle of the alamo bear flag revolt settlement of texas

According to this passage, what can be expected of people appointed as judges temporarily?