What was added to the constitution four years after it was ratified?

The Bill of Rights was added to the Constitution four years after it was ratified.

Hope this helped! :)

The Bill Of Rights I believe, but that may be wrong I'm trying to do this by the top of my head.

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.

Are you enrolled in plato?