Why colonists feel the articles of confederation were necessary even though the declaration of independence was already written?

the declaration of independence outlined a system of government but did not specify how much power that government could have.
the declaration of independence determined individual rights but did not discuss how those rights influenced others.
the declaration of independence called for a federal system of government but did not plan for the role of individual states.
the declaration of independence outlined a relationship between individuals and the government

"The Declaration of Independence outlined a system of government but did not specify how much power that government could have."

Explanation:

The Articles of Confederation and the Perpetual Union, known as the Articles of the Confederation, constituted the first government document of the United States of America. They were approved by the Second Continental Congress on November 15, 1777, after several months of debate. It was a non-binding guideline until its ratification four years later, on March 1, 1781. The Articles of Confederation are considered one of the four founding documents of the North American nation.

The Articles formed a weak confederation that united the Thirteen British North American Colonies, with the capacity to govern themselves almost only in times of war and emergencies. After the end of the War of Independence and the beginning of new priorities, its limitations became evident. This document was replaced by the Constitution of the United States after its ratification on June 21, 1788.

it's no easy i swear it's hard

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.