B) a states' rights issue started by South Carolina
A <span>Nullification Convention
was held in South Carolina, where the state declared that the Tariffs of 1828
and 1832 were unconstitutional and refused to enforce them
</span>If this helped, please mark brainliest :)
<span>The correct answer is letter C. The United States counteracted the German threat to invade Haiti and Santo Domingo by lending military support and selling weapons. They did this to protect the people of the Dominican Republic as well as the lives of many Americans.</span>
I believe it is the conquest of Constantinople.