A) Emancipation of slaves
<span>The term used to refer to the mass movement of African Americans from states that were located along the Mississippi River to Kansas was called the Exodus of 1879 (sometimes also referred to as the Kansas Exodus and the Exoduster Movement). These people fled from Jim Crow Laws, the Ku Klux Klan and the White Legacy that was dangerous to them and their survival.</span>
Answer: driving on the highway
It is the practice of driving in the highway that can be considered as an indicator of finally accepting social contract. Social contract refers to the agreement wherein individuals in all parties agreed to have a natural transfer of right.