According to the events in history, we can see that there is a colonization by the Europeans as they went about seizing territories as either a spoil of war with another European country or as a direct invasion.
The Europeans colonized a lot of lands and people which they ruled over for many years, making them work for them and exploiting the riches in their country and mineral resources which was used to enrich them.
In an attempt to expose and criticize the actions of the government against enslaved populations, Helen Hunt Jackson wrote this non-fiction book in order to create critical thinking about the problem.
Generally speaking, advanced farming techniques allowed for a surplus of food, which led to the emergence of a "artisan" class--since for the first time people were "freed" to engage in other actives besides gathering food.