Answer:
C. 3 million
Explanation:
Conducted by the Census Office, it determined the resident population of the United States to be 23,191,876—an increase of 35.9 percent over the 17,069,453 persons enumerated during the 1840 Census. The total population included 3,204,313 slaves.
Answer: Petroleum.
Reason: Petroleum could be turned into kerosene which was used in stoves and lamps.
Russia in the late 19th and early 20th century was a massive empire, stretching from Poland to the Pacific, and home in 1914 to 165 million people of many languages, religions, and cultures. Ruling such a massive state was difficult, and the long-term problems within Russia were eroding the Romanov monarchy. In 1917, this decay finally produced a revolution<span>, which swept the old system away. Several key fault lines can be identified as long-term causes, while the short-term trigger is accepted as being </span>World War 1<span>.
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