The correct answer to this open question is the following.
Unfortunately, you did not include options or further references, we can say the following.
Different native peoples and outside countries competed for control of the northwest because they knew the kind of raw materials and natural resources of the Norwest. So Native American Indian tribes competed and fought with white Europeans that were interested in taking those lands and remove the Indians to exploit those raw materials in order to make big profits.
The crucial years were from 1774 to 1812. Many Europeans arrived at the Pacific Northwest to participate in the fur trade. We are talking about merchants from countries such as Russia, England, Portugal, Spain, and France. They tried to establish trade with different Native American tribes such as the Haida people, the Salish, and the Makah.
B.during the period of Viking,Magyar and Muslim invasions.
<span> Madeira and the Canary Islands </span>
The correct answers are A) economic differences, B) the presidential election of 1860, D) social differences, and E) the issue of slavery.
<em>The following were causes of sectionalism: A) economic differences, the presidential election of 1860, social differences, and the issue of slavery.</em>
Sectionalism divided the United States into many forms. It confronted American people on a variety of issues that ended up in a bloody Civil War. The presidential election of 1860 divided the nation. Republican candidate Abraham Lincoln defeated Democratic candidate Stephen A Douglass, and Constitutional Union candidate Jhon Bell. There were many economic differences that divided poor people that tried to make a living with the wealthier people. This created social differences that were notorious and showed the lack of basic things that many people had. And of course, slavery, the issue that divided the North against the South. The Northern states supported desegregation laws while in the South they were against desegregation. For the Southern states, slavery was the base of the economy in the farm fields.