Which invention ensured that raising wheat would remain the main economic activity in the midwestern prairies? (a) mechanical reaper.(b) steam cylinder rotary press(c) telegraph(d) steam-powered locomotive

(A) mechanical reaper

Explanation:

According to my research on farming tasks and wheat raising, I can say that based on the information provided within the question the invention that ensured this was the Mechanical Reaper. This machine was invented in order to be able to harvest enormous amounts of wheat automatically without having to harvest it the old way of using scythes and sickles.

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answer; /// i believe ist (al shugart);