How did the Nazis increase efficiency in Auschwitz-Birkenau as opposed to the camps of Operation Reinhard?

Was Castro justified to ask for soviet nuclear weapons in Cuba

What important transportation system made its debut in 1825? a. the transcontinental railroad b. the Erie Canal c. the interstate highway d. the New York subway

King Ferdinand started a school for sailors in Portugal. True False

What conditions in Western Europe brought about the necessity for Feudalism? Explain.

A certain congressman is tired of living in Washington, D. C. He wants to move back to his home state and run his ranch full-time. He proposes that Congress not meet at all this year. Is his proposal constitutional?

The first civilizations of Mesoamerica did not use metal very often. when they did work with metal, what was it usually used for

What were some major wars where native americans lost lives?

With whom did the Pullman company share its profits with?

How did the radio affect people's lives

Battle/city where victory came after weeks of bombardment and starvation in the civil war