HELP WILL GIVE

Part A
What is Las Casas describing in this passage?

Which impact did the civil war have on the spread of disease in texas a. disease decreased bc people left the area to fight in the war b. disease increased bc medicine was in short supply. c. disease increased bc many new diseases were brought to the area d. disease decreased bc confederate doctors distribute new medicines to local communities

Can someone me with this ! i only have 20 minutes to finish it. i will rate you the brainliest and 5 stars.. asap (98 points)

Which best summarizes the social contract outlined in the preamble of the declaration of independence?