How did cultural diffusion most affect business during the medieval era? The use of standard Arabic coins made it easier to buy and sell goods.
Chinese numerals became commonly used and made trade easier.
Chinese weights became the standard and made it easier to buy and sell goods.
The use of Persian as one common language for merchants made trade easier.

Two of these describe "federalism." (choose two answers) select one or more: a. the national government absolutely controls all state governments. b. power is shared by the national and state governments. c. state governments exercise absolute power over the national government. d. it is a compromise meant to eliminate the disadvantages of a "unitary" and a "confederate" system.