Besides the United States, who else claimed Oregon Country in the early to middle 19th century? (early to mid 1800s)

Which of the following american companies had a monopoly in the late 1800s?

How did the supreme court decision in the slaughterhouse cause an affect american business

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.