What factors led the Greek city-states to put aside their differences and fight as a unified force?

The differences between Athens and Sparta eventually led to war between the two city-states. Known as the Peloponnesian War (431-404 B.C.E.), both Sparta and Athens gathered allies and fought on and off for decades because no single city-state was strong enough to conquer the others.

the correct answers are: 1) lay and collect taxes and duties; 2) pay debts; 5) borrow money;   6) regulate commerce with foreign nations.

article 1, section 8. refers to the powers of congress. according to the united states constitution: “the congress shall have the power to lay and collect taxes, duties, imposts, and excises, to pay the debts and provide for the common defense and general welfare of the united states.”