There was a boom in fur trading in that time, more Posts were created, artists came and showed a vast wilderness, the Native American people received smallpox and three main tribes almost died off, and they were also placed into reservations. The military also made their presence known.
Benito Mussolini = Italy
Adolf Hitler = Germany (third Reich)<span>
</span>Hideki Tojo = japan (i think)
Justice Frank Murphy opposed the majority. He believed that military necessity was merely an excuse that could not conceal the racism at the heart of the restrictions.
Hope this helps! :D