Read the following excerpt from a book written by John Locke. Briefly summarize the passage and explain the impact these ideas had on countries around the world during the 18th and 19th centuries. Give specific examples of these ideas' impact in two different parts of the world.  
For no government can have a right to obedience from a people who have not freely consented to it; which they can never be supposed to do, till either they are put in a full state of liberty to chuse their government and governors, or at least till they have such standing laws, to which they have by themselves or their representatives given their free consent, and also till they are allowed their due properly, which is so to be proprietors of what they have, that no body can take away any part of it without their own consent, without which men under any government are not in the state of freemen, but are direct slaves under the force of war. — John Locke, Second Treatise on Government, 16901