Under the articles of confederation, congress was unable to improve the economy because it did not have the

Congress could not improve the economy under the Articles of Confederation because it lacked the ability to levy any taxes and could not regulate interstate or foreign commerce meaning each individual state set up their own economic policy.

power to stop foreign goods.

Explanation:

it couldn't regulate trade because it couldn't help states pass tariffs and didn't have the authority to pass tariffs by itself either

the answer should be

a.) power to regulate inflation

The answer should be

A.) power to regulate inflation

Power to levy taxes or regulate the economy. Or to coin money.

The answer would be A.

No backing of the executive branch.

Explanation:

Under the Articles of Confederation, Congress was unable to improve the economy because it did not have the power to tax the states. This meant it was practically impossible for the United States to repay its war debts. 

Under the articles of confederation, congress was unable to improve the economy because it did not possess the ability to regulate interstate trade nor to levy taxes. 

Congress didn't have the power to improve the economy because the Articles of Confederation only provided a weak government.