This prehistoric era known as the Stone Age is characterized by the development of stone tools

yes it is

Explanation: Hope this helped

whose power in the senate is equal to the power of the speaker of the house?

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.