I know one of them were john o'sullivan
The answer is: Support for constitutionalism increased, while the power of monarchies decreased.
Constitutionalism is concept that propose the power of the government should be limited and all government officials should be subjected to the same law like the citizens.
This concept would definitely reduce the power of monarchies since they can be held responsible for all their wrong doings while giving more power to the people.
C. That all men are equal is your answer.
To find out, read the whole sentence:
"<em>We hold these truths to be self-evident, </em>that all men are created equal<em>, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.</em>"
Note that answer C is found inside the quote (bolded), therefore is your answer.
~
