Slaves were brought on ships traveling across the Atlantic, huddled and packed together tightly with little food and water.
New England: Mainly house work, and working to help bring in fishing for their masters.
Middle: farming and manual work
South: farming, cotton-picking, etc.
Jobs were different in each region, because in each region, terrain, resources, and the ‘health’ of the land were very different
Slaves were important to the colonial economy, because they needed cheaper and more workers for their farms and such. IF you brought more colonists, it would have been harder, because they essentially don’t want to work on someone else’s land, and would just go find theres
hope this helps