In the 1800s, the us established forts west of the mississippi river from louisiana to minnesota to establish peace among warring american indian tribes and to a. provide american indians with funds and goods for their survival b. strengthen trade between white american settlers and american indians c. reassure white american settlers that the frontier was safe and peaceful d. protect american indian tribes from white american settlers

The answer to this question is the letter B. strengthen trade between white American settlers and American Indians.

The United States of America establishes the fort in Mississippi River from Louisiana to Minnesota because it is used as a highway of commerce.

B. strengthen trade between white American settlers and American Indians.

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.