We need to see the investigation!
Answer: Both the Chesapeake and Southern colonies had been made of a majority of single, young, white guys who labored as indentured servants. After Bacon's Rebellion, the Chesapeake and Southern colonies moved toward the usage of enslaved employees introduced from West Africa.
The three-fifths compromise was basically congress deeming that a slave was three fifths of a person. So I do believe that it is the first one: States representation in congress based on slave population
Five signers were captured by the British as traitors and tortured before they died.
Twelve had their homes ransacked and burned.
Two lost their sons serving in the Revolutionary Army, another had two sons captured.
Nine of the 56 fought and died from wounds or hardships of the Revolutionary War.