The concept of checks and balances ensures that... a. each branch of government does not have power over the others.
b. only one branch of government maintains power over the others.
c. each branch of government has the ability to limit the power of the others.
d. no branch of government has a separate power from the others.

each branch of government has the ability to limit the power of the others.

Explanation:

Checks and balances in the world economy can be seen through the variety of global organizations that seek to check the power of different nations, organizations, and individuals. 

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.