From which two nations did most immigrants come in the mid-1800s?

The revolutions in latin america in the 19th century resulted in political independence from europe the end of slavery in each country the establishment of stable democracies social and economic equality for all

The quote below is an excerpt from the charter of the united nations: "the purposes of the united nations are: to maintain international peace and security, and to that end: to take effective collective measures for the prevention and removal of threats to the peace, and for the suppression of acts of aggression or other breaches of the peace, and to bring about by peaceful means, and in conformity with the principles of justice and international law, adjustment or settlement of international disputes or situations which might lead to a breach of the peace . " source:this section implies that the united nations is prepared to do what to keep world peace?

What is a characteristic of hunter-gatherer societies?