The Three-Fifths Compromise set up a system for counting slaves when states determined their numbers of representatives.
Explanation:
The Three-Fifths Compromise was an agreement between the 13 original states in the United States by which a slave should count for 3/5 free men when distributing the seats in the newly created House of Representatives. The agreement was passed at the Philadelphia Convention in 1787 and enrolled in the constitution.
Those who were against slavery wanted to take into account only the free people of each state, on the other hand, those who supported slavery, wanted to count slaves, without reducing it to three fifths. As slaves could not vote, their masters would thus have the benefit of greater representation in the House of Representatives and the Electoral College.
Assuming that this is referring to the same list of options that was posted before with this question, the answer is that they have gotten involved with casework for all of the following reasons except "domestic issues"
Answer: The World War 1 experience impacted hugely on U.S. culture, domestic politics and society. The war also resulted in an increased demand for weapons abroad. This led to increased profits and heightened productivity in the American steel industry. World War 1 ushered in an era of using chemical weapons.