What does facts be submitted to a candid world mean in the declaration?

Prior to that sentence in the Declaration of Independence, statements were made about the nature of government, where it derives its authority from, its relationship with mankind and how mankind usually and should respond to its actions. They made the claim that the current government of England had overstepped it's bounds.

"To prove this, let facts be submitted to a candid world" essentially is saying to prove our point, we're going to put down some facts on paper about what the King of England has done and let the world view this and judge for themselves whether or not we're right or wrong.

They then list all of their grievances with King George.