What are were the contributions of john d Rockefeller?

Who were the most important writers of the last half of the nineteenth century? Who found a completely different existence from rural residents living in America during the 1800s? Where did some of the major battles take place in the civil war? What is the value of a 1899 large bill silver certificate? How much is a Morgan silver dollar from 1885 worth? What country did the last name Dickerson come from? How much is an 1886 silver dollar worth no mint mark and in very good condition? What was the purpose of the Northwest Ordinance of 1787? Describe segregation in the early 1900? When was the first union made? Describe the red scare that occurred in the US shortly after the end of World War 1? Is the failure to act as a reasonably prudent person would act under similar circumstances? What is considered to be the pre-Civil War capital of the South? What is a 1943 silver penny with US on it? What is the value of a 1953 C US 5 dollar bill? What was madam c.j walkers importance in history? Was ruby bridges a slave? When was Too Much Sugar for a Dime created? What did colonial people eat for dinner? Was Henry Ford in the Civil War?