Which of the following factors contributed most to the expansion of both the persian and greek empires

Military Conquest. I just checked and thats right

the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes

legislative branch:

one of the three branches of government divided between the senate and the house of representatives.

- creates or makes laws

- power to override a veto

executive branch:

one of the three branches of government, headed by the president.

- enforces or carries out laws

- power to veto a bill sent to it by congress

judicial branch:

one of the three branches of government, headed by the chief justice of the supreme court.

- interprets laws

- power to declare laws or actions by the government unconstitutional