Where did founders like thomas jefferson get inspiration for the ideals in the declaration of independence?

When you think about the Declaration of Independence it was the written in the time where inequality wasn't in the U.S. among the citizens but it was also for U.S. independence from other nations esp the British. To be totally honest you will be better going to the website history.com and listen to people who have read the entire Declaration of Independence writing and you will get a better answer you will get here. Go to google type What inspired Thomas Jefferson to write the Declaration of Independence and click on the link that has history.com.  It is amazing story to hear and read because it shows how it was best that America once called Americas needed to be freed from other nations telling us what to do and how to treat others. Check it out. It will blow your mind.  Now you will understand when you hear people say we honor soldiers who are fighting to keep us free.

The amendment process.