I don't think it is possible to overstate how significant those ideas were.
That was the time in which the absolutist governments of Europe began to fall, being replaced with Constitutional Monarchies or other representative governments. This led to upheaval in much of Europe as the "old guard" of nations faced revolutions or wars with nations (like France) that wanted to change their own political orders as well.
Things such as religion and other cultures traditions were also spread along the Silk Road Trade routes.
Answer:
Urban transport systems need to become more sustainable.
Nature-based solutions work for cities, too.
Community networks can support urban disaster resilience.
Smart solutions can improve urban livelihoods.
Cities, countries and international bodies need to collaborate.
Explanation:
No, it was not moral or right.
Instead of being submissive and acting as immigrants themselves, Europeans were destructive and killers. They had no respect of property. Andrew Jackson even forced them to move from their homes and most had to settle in Oklahoma.
(not all Europeans, but most)
Answer:
to clean up Lincoln's country wars a conflict over economic control of the area