Question

Why were southern and Caribbean colonies most dependent on slave labor?

Answer 1

Spain cause that's where they took a brake

Answer 2

Answer:

Slaves were cheaper than the paid labour, slavery was legal and considered as a property of their owners.  Southern and Caribbean colonies were rich in climate and the land was fertile to produce cash crops as they brought profit for these colonies. Slaves were forced to work in the field from sunup to sunset. Southern and Caribbean were the centre of the wealth and prosper with the help of the slave trade.