What contributed to the decline of the Yuan dynasty? A. a lack of infrastructure

B. a lack of printed currency

C. failed military campaigns

D. unfair treatment of Mongols

Who introduced arabic numerals to italy, which make bookkeeping possible? a. brunelleschi b. cosimo de medici c. fibonacci d. gregory xi e. giovanni de bicci de medici

Which of the following cultures were among the earliest known inhabitants of north america? a) mayab) incac) anasazi d) olmec

"the plan of removing the aboriginal people who yet remain within the settled portions of the united states . . approaches its consummation. . an extensive region . . has been assigned for their permanent residence. it has been divided into districts and allotted among them. many have already removed and others are preparing to go. . " removal of southern indians to indian territory, 1835 this passage is most closely related to a) imperialism. b) the civil war. c) westward expansion. d) the french indian war.