Who built the worlds first liquid-fueled rocket?

robert goddard

konstantin tsiolkovsky

hermann oberth

neil armstrong

Which of the following is one example of an ideological conflict that became one of the causes of world war ii?

In approximately 1500, most american indians in the northeast and the southeast lived and made decisions in

Plz i will give use examples from the lessons and your own personal experiences to compose at least one well-developed paragraph on the following: define the term reserved powers, and give an example of a reserved power of government.