42. Which describes how the U. S. government changed from the Articles of Confederation to the U. S. Constitution?

The Articles created a loose confederation of sovereign states and a weak central government, leaving most of the power with the state governments. The need for a stronger Federal government soon became apparent and eventually led to the Constitutional Convention in 1787

Explanation:

can you show the map , i'll be able to update my answer

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.