The Northern Pacific Railway was completed in . 1863
.
1873
.
1883
.
1883
.

1883

Explanation:

He completed the line between Saint Paul, Minnesota, and Wallula (where it connected with the Oregon Railway and Navigation Company's line to Portland), witnessing the driving of the last spike on September 8, 1883.

1833

Explanation:

.

explanation:

answer; /// i do believe that the correct answer is (a); a farming tribe that settled primarily along the mississippi and arkansas rivers;