What major historical event happened between the first poll and the second poll

Alfred London a Kansas  governor was perceived by the poll , to be in the lead against Roosevelt .

Explanation:

There was a presidential election in  1936  whereby of 1936 Alfred Landon, a  Republican governor in Kansas vied  against the incumbent President, Franklin  Roosevelt. In  the 1936 election, the Prediction and the perception was that Landon would get more than 57% of the total vote against Roosevelt's who was perceived to have around 43%.

The statistics provided such an implication .

the answer is c my brotha. c.   formed an alliance with the soviet union.

the answer is b: the religion they practice.

here's why:

there were many different native american tribes and those with similar characteristics formed a main tribe or nation. each had its own language, religion and customs.