Which policy did the u. s. government favor during the late 19th century to develop the western region?

In the united states the largest number of sheep are raised in the a.west b.north c.east

What is the supreme law of the land? the declaration of independence the federalist papers the articles of confederation the constitution

The massacre at sand creek was an attack by a colorado militia on peaceful american indians. a colorado militia on a group of dakota warriors. american indians on peaceful white settlers. federal soldiers on a group of cheyenne warriors.