How did this invention contribute to the expansion of the plantation system? a) by reducing the number of slaves needed for growing cotton b) by increasing the time needed to cultivate cotton c) by increasing the profitability of slavery d) by reducing the demand for raw cotton

I believe it is C, By increasing the profitabilty of slavery.

Explanation:

a   church leadership can be defined as a process of influencing other people to work together to accomplish a desired purpose.

in this case one person acting as a role model and influencing other to work as one person to accomplish a certain misson or purpose.

this can be either leading people to do the work of god