When Robert burce foote and Henry Bruce foote found the billa surgam cave ​

What do the discoveries of shells used in jewelry and a huge dredged canal tell us about the indus valley civilization?

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.

Who was in charge of american troops during world war i?