I think the answer is D, I could be wrong though
The land was free and perfect for farming, if settlers survived the journey to Oregon the land was all theirs. But not only did the US like it, Britain and Russia also liked it. So the US told people to move there ASAP so it would officially be claimed by America.
False, he ruled for 37 years.
By being hard to do the work because it does get hot out when doing that kind of job