Who was the hellenistic (greek) mathematician who invented the compound pulley and is known for his work with the laws governing simple machines? a. pythagoras b. euclid c. archimedes d. hippocrates

Which of the following was used only once, to ratify the 21st amendment (repealing prohibition)? a.three-fourths of both houses of congress. b.three-fourths of the state legislature approved it. c.two-thirds of the state legislature approved it. d.ratifying conventions in three-fourths of the states approve it.

The communists triumphed over forces because of a well-disciplined fighting force, a single - minded sense of zeal , and strong convictions.

To what extent do you think the roman republic was democratic?