Answer :
Over time, the settlers who stayed were able to adapt and modify the landscape for farming - would be the sentence from the article that best supports that thesis.
I believe the answer is: Over time, the settlers who stayed were able to adapt and modify the landscape for farming
At the beginning, settlers had a very hard time to create a farming land because they have very little knowledge on how to get the necessary resources in new area. Over time, they were able to adapt and utilize various technology to obtain necessary resources from further area.