John Brown stirred up a lot of controversy with his attack on "Harper's" Ferry in Virginia
Answer:
I believe the answer is: Unfamiliar weather and soil conditions affected cultivation.
Explanation:
The unfamiliarity make the colonists need a lot of time to adjust their agricultural farming process (which resulted in several years of failures). After living on this region for some time, the colonists able to understand the type of crops that could grow in their territory and the cultivation technique that they could use to sustain the operation.
Answer:
The passage of the Civil Rights Act of 1964 was a significant event in converting the Deep South to the Republican Party; in that year most Senatorial Republicans supported the Act (most of the opposition came from Southern Democrats)