RUSSIAN HISTORY what were the results of the soviet command economy?

I will grant a barnliest!

(05.04 mc) how did the roman transportation system keep the empire strong? plz

Why was the development of an alphabet an important advancement for the phonician civilization? check all that apply

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.