Answer:
Our sun is closer to Earth
The increased population demands more health services and facilities which is not possible due to economic and political constraints. Increasing population needs more educational resources. Increasing population deteriorates cultural heritages due to frustration and anger
If colonists mistreated natives in any way, treating them as less than human, that would indeed inflame the native population, leading to increased tension between the two groups. This problem, when not solved, has led to revolts and few colonies.
The answer is the Federalists. The Federalists believed that a strong government was necessary for the new nation.