The answer to this is facts
They wanted to protect the families and the children so no lives would be lossed
North , the north had supplies and demands over south , north had coal and cotton and more ''advanced" in materials that the south originally wanted .
President Jefferson had doubts because he was unsure if the purchase of land without the agreement of the legislative branch was constitutional
In this scenario in where the result of the anti-nephi-lehies becoming converted to the Lord was that they experience afflictions however despite the afflictions, they are still grateful to the Lord. Hope this is the answer and would be of help.