1) They could've tried to defend the European Explorers to not set foot on there land, even though they might've all died in war.
2) Horrible, they got there first, its theirs, and they don't deserve the diseases the Europeans do, they can stay to their religion, and its not a big deal.
Since the Companies had more surplus amount of items from the increased level of productivity, they sold the items for a lower price to lure more people to buy it/more.
Deists believe in God - they believe he is the one who created everything in the very beginning, but then left us to our own devices to decide what we wanted to do with our lives. They do believe God exists, but they think that he doesn't interfere with anything on Earth, be it science, or mechanistic workings of the universe in general.