The swiss city-state of geneva became a model of protestant morality under the leadership of
a. john calvin.
b. john knox.
c. martin luther.
d. ulrich zwingli.

The correct answer is A. John Calvin. (actual name: Jean, he was French and Geneva is a city in Francophone Switzerland). His reform in Geneva were in 1540s.

The most difficult task confronting many Southerners during Reconstruction was devising a new system of labor to replace the shattered world of slavery. The economic lives of planters, former slaves, and nonslaveholding whites, were transformed after the Civil War.