Which of these was a major philosophy expressed in the declaration of independence

Natural rights!
Natural rights or God given rights were introduced by John Locke. These natural rights are also known as a social contract.
The Declaration of Independence was influenced by natural rights "life,liberty,and the pursuit of happiness

The natural rights. This idea of rights was included in the declaration of independence. This idea was inspired by John Locke. Natural rights consists of the right to life, liberty and the pursuit of happiness! :)
We have a lot to thank to out founding fathers. If not we may not have Natural rights! 
Hope this helps and remember to mark it as brainliest! BTW nice question, I enjoyed answering it.

answer: to communicate with people on the other side.

explanation:

but its not smart to do because the gateway on an ouija board is not gaurded