What things need to be added and changed on the U. S. constitution for being outdated?

Amendments. Since 1787, Congress has written 33 amendments to change the Constitution, but the states have ratified only 27 of them. Congress must protect the rights of freedom of speech, freedom of the press, freedom of assembly, and freedom of petition. Congress cannot create a national religion.

answer:

the colonists had their reasons for creating a weak central (federal) government under the articles of confederation. not only did they create a weak federal government, they restricted the powers of the state governors because they were so concerned about the leaders abusing their power.