Answer:
The principle of the rule of law
Explanation:
Not only self-rule, but representative government had taken root on American soil. The English Magna Carta, written more than 400 years before the Mayflower Compact, established the principle of the rule of law.
The answer i believe is d
I would choose non-polluting energy source and useful in remote areas - that is if there are plants and industries that are away from the general population.