Who first introduced the innovations of arabic numerals and the concept of zero to Europe? A. soldiers from the roman empire who traveled across europe
B. mathematicians from india who set up schools in europe
C. merchants from the islamic world who traded with europeans
D. scholars from ancient greece who studied at asian universities

Which situation would be considered an example of the freedom of association? a. three students write a letter to a local newspaper demanding that a teacher be fired. b. a group forms on a college campus to support a particular political candidate. c. an individual purchases a membership to a local gym. d. a religious organization buys several local lots in order to construct a new church building.

Explain how zollverein, a tariff agreement, to unite the german states.

Which type of monetary policies would the federal reserve most likely use when the economy is struggling