Answer:
Private property refers to a kind of system that allocates particular objects like pieces of land to particular individuals to use and manage as they please, to the exclusion of others and to the exclusion of any detailed control by society. In legal terms it's usually a designation for the ownership of property by non-governmental legal entities. Private property is distinguishable from public property, which is owned by a state entity; and from collective (or cooperative) property, which is owned by a group of non-governmental entities Certain political philosophies like socialism and anarchism make a clear distinction between private and personal property while others blend the two together. Private property is a legal concept defined and enforced by a country's political system
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Explanation:
The America Legislator that assaulted a fellow Congressman prior to the start of the Civil War was Preston Smith Brooks, an supporter of slavery, who beat Senator Charle Sumner, an abolitionist, close to death at the United State Senate itself. For decades later Senators carried weapons, including revolvers into the Senate to protect themselves from assaults. Preventive measures proved unsufficient, since many more violent acts happenned over the years.
manor lord was a free man who held land ( a fief ) from a lord to whom he paid homage and swore fealty. A vassal could be a lord of the manor but was also directly subservient to a Noble or the King.
B. Stone tools is the answer.