Why did the national government have no power under the Articles of Confederation?

One of the biggest problems was that the national government had no power to impose taxes. To avoid any perception of “taxation without representation,” the Articles of Confederation allowed only state governments to levy taxes. To pay for its expenses, the national government had to request money from the states.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.