Answer:
Many still didn't receive good treatment and many were still discriminated. They couldn't vote, and everyone looked down on them.
For a better life and more land
The boyars, a high rank in the feudal system of Russia and nearby. They were aristocrats.
Theocracy - meaning it follows after a deity or religious ideals
Okay, so, just from the top of my head, I think that it is because of the growing belief of "Manifest Destiny" in the nineteenth century. I'm not sure if this is the actual right answer for your question, but I do know that Manifest Destiny was in the nineteenth century and was the widely held belief in the USA that American settlers were destined to expand through out the continent. And I think both the USA and Europe wanted to expand, it was kind of a copetition/conflict they had. This was actually how Canada and Alaska came to be I believe. This was a simple explanation btw. cx