What method of manufacturing, introduced in the early 1800s, made mass production possible? o the use of interchangeable partso the use of hand-crafted productsthe use of specialized laboro the use of expensive materials.
is the first one it or the third one lol

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.

What do sellers do if they expect the price of goods they have for sale to increase dramatically in the near future? store the goods indefinitely regardless of when the price rises store the goods until the price rises and then try to sell them sell the goods now and try to invest the money instead of resupplying sell the goods now but try to get the higher price for them

What terms did the treaty of versailles place on germany