Checks and balances is the answer to this question.
Peaceful relations with neighboring American Indian groups and fertile farmland helped Penn's experiment become a success. Philadelphia grew into one of the most important cities in colonial America, becoming the birthplace of the U.S. Constitution.
The correct answer is A the first one.
The answer is D or B. because the weapons were a very big deal there armor was more advanced armor which protected them. Sorry I can’t be better help