<span>The Spanish flu that broke out in 1918. The bubonic plague that swept across Europe in the mid-1300s. </span>
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.
The answer is most likely A, it was the first case the went against the "concept of judicial review"
by providing arms and ammunition to Native Americans.