If you are talking about the development of political parties, then the issue that led it to them was “the struggle over ratification of the federal Constitution of 1787” (loc.gov).
Federalists, such as Alexander Hamilton, wanted a strong, central government and the Anti-Federalists, like Thomas Jefferson, “advocated states’ rights instead of centralized power”. (Library of Congress)
Answer:
(A) huge, carved stone heads
Explanation:
Aztec is most well-known for their sculptures and metalwork, though the latter hasn't survived to the modern era as well as the former. Many of Aztec's sculptures are gigantic in size, depicting the deities that Aztecs worshiped. The sculptures are usually very colorful and are usually encrusted with precious jewels.
The development that probably hurt it is the reduction of open range herding. In history, people could just let their cattle roam freely and find food since the plains were huge and nobody lived in them. Nowadays, this can be problematic because there are more and more people and settlements and roads with cars so free range herding has been drastically reduced which cost the herders a lot.