Question

why was it difficult for congress to pass laws under the articles of confederation?required at least 9 out of 13 to agreecongress lacked the power to declare warcongression action required executive approvalthey lacked the power to regulate trade

Explanation:

The Articles of Confederation set a high bar for passing laws, requiring supermajority support from the states. The other options describe separate limitations of the Confederation Congress, but they do not explain why passing laws itself was difficult.

Answer:

required at least 9 out of 13 to agree