Has anyone taken the Cumulative final for World history? I need help and isn’t giving me the correct answers.

What is the purpose of the system of checks and balances

Select the five weaknesses of the articles of confederation. congress could not declare war or establish an army. congress could not levy taxes. congress could not control trade. not all the states were represented in congress. no national court system. no executive to enforce the laws. congress could not negotiate with foreign governments. the national government could not borrow money. nine of the states had to agree to pass a law.

This amendment made cuba an american protectorate and forced cuba to cede guantanamo bay to the u.s.