While SHARED powers are not held exclusively by any branch of the government, NEGATIVE powers are those that one branch can exercise over the other.
The value of cash crops influenced Southern farmers decision to use slaves because of the cost of slaves. During the 18th and first half of the 19th century, slaves were considered property. This meant that they could be bought and sold. With this mind, it was cheaper to buy and own slaves in comparison to using another type of labor system like indentured servitude. This is because indentured servants were only worked for the farm owner for 4-7 years. Whereas in slaves could be kept indefinitely.
What do you mean by captions? Like quotes?
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"The mistaken policy of the Stamp Act first disturbed this happy
situation; but the flame thereby raised was soon extinguished by its
repeal, and the old harmony restored, with all its concomitant advantage
to our commerce. The subsequent act of another administration, which,
not content with an established exclusion of foreign manufactures, began
to make our own merchandise dearer to the consumers there, by heavy
duties, revived it again; and combinations were entered into throughout
the continent to stop trading with Britain till those duties should be
repealed. All were accordingly repealed but one, the duty on tea. This
was reserved (professedly so) as a standing claim and exercise of the
right assumed by Parliament of laying such duties." ~ Benjamin Franklin
"Patriotism is as much a virtue as
justice, and is as necessary for the support of societies as natural
affection is for the support of families." ~ Benjamin Rush - Patriot and Physician
"In about three hours from the time we
went on board, we had thus broken and thrown overboard every tea chest
to be found on the ship, while those in the other ships were disposing
of the tea in the same way, at the same time. We were surrounded by the
British armed ships, but no attempt was made to resist us...And it was
observed at that time that the stillest night ensued that Boston had
enjoyed for many months." ~ George Hewes Boston Tea Party - Eye Witness Account
"We were merry, in an undertone, at the idea of making so large a cup of tea for the fishes." ~ Joshua Wyeth
http://www.historyplace.com/unitedstates/revolution/teaparty.htm - Here's a website with the entire eyewitness account
To "scour" means to clear an area or region of enemies or outlaws (i.e. "scour the area for our enemies and make sure they are eliminated). To "search" is to examine an area or region with the intention of locating something or someone. "Scouring" involves locating and eliminating an enemy; to search is to simply locate someone or something.