Answer: I think they invented the double-entry bookkeeping.
Hope this helped :)
Answer:
C) 1989 Revolutions in communist countries of Eastern Europe
if b is wrong then id have to say a
Answer:
Iranian nationalism refers to nationalism among the people of Iran and individuals whose national identity is Iranian. Iranian nationalism consists of political and social movements and sentiments prompted by a love for Iranian culture, Iranian languages and history, and a sense of pride in Iran and Iranian people.
Explanation:
Source= Wikipedia