What happened in 1821 that encouraged the further development of Western trade routes, some of which crossed the Oklahoma Territory?

A. The Trail of Tears brought American Indians farther west.
B. Mexico achieved independence from Spain.
C. Gold was discovered in California.
D. The first railroad that crossed the continent was constructed.

A?

None of the others happened in or around 1821 so I would say A

Correct.

Popular trade items from the osage of the three forks region in the late 1700s included fur, honey, and?

Popular trade items from the Osage of the Three Forks region in the late 1700s included fur, honey,

The correct answer for the question is A. The Trail of Tears brought American Indians farther west.

To determine the answer, we need to analyze the given options and choose the one that best fits the question.

Option A states that the Trail of Tears brought American Indians farther west. The Trail of Tears was a series of forced relocations of Native American tribes, particularly the Cherokee, from their ancestral homelands in the southeastern United States to designated Indian Territory (present-day Oklahoma). This event occurred in the early 1830s, which is close to the given year of 1821.

Option B mentions Mexico achieving independence from Spain, which occurred in 1821, but this event did not directly contribute to the development of Western trade routes or the crossing of the Oklahoma Territory.

Option C refers to the California Gold Rush, which happened later in 1848. While significant for the development and population growth of California, it is not relevant to the period of 1821.

Option D suggests the construction of the first railroad that crossed the continent. However, the first transcontinental railroad in the United States was not established until much later, with the completion of the Pacific Railroad in 1869.

Therefore, based on the information provided, the most plausible answer is A. The Trail of Tears brought American Indians farther west.