I believe the answer is: The creation of national parks
Due to the conservation regulation from Theodore Roosevelt, The united states government founded 230 million acres of public lands that are resided for the creation of national parks. This parks were created to protect various forms of plants, animals, and natural resources reserves.
Both yes and no. Yes as in the massacre happened and many of the people shot civilians during the massacre. They weren't as in Captain Preston was found not guilty and many historians believe that he did not order the soldiers to attack but that the soldiers attacked of their own free will. There are even many who claim that it was self defense and that nobody was guilty except for the colonists.
B.extinction of large animals
<span>his is an example of </span>Displacement