The answer is d i am pretty sure
Answer:
It should be the second continental Congress.
Explanation:
It couldn't be the constitution because it comes after the Declaration and the Albany Plan is probably not for the U.S.
It was the election of Abraham Lincoln as US president that caused southern states to secede from the union just weeks after it happens, since he was an outspoken opponent of slavery.
Answer: A) having a population of more than 60,000 free adult males
This is according to Article 5 in the Northwest Ordinance (July 13, 1787) which says
"And, whenever any of the said States shall have sixty thousand free inhabitants therein, such State shall be admitted".