The correct answer is Slaves
Slaves were a big thing in Florida and a lot of people owned them with the amount of slaves per capita being much higher than in other southern states. This was a problem for Floridians because they often feared that slaves could rebel and they also feared that liberating them would ruin them politically and socially.
        
             
        
        
        
Answer:
Pennsylvania railroad
Explanation:
Pennsylvania railroad as a supervisor. At the age of 33 in NYC, Carnegie wrote a letter to himself.