Final answer:
Political parties in American politics are better described as divisive, as they promote diversity of ideas and create ideological conflicts.
Step-by-step explanation:
The term that better describes political parties in American politics is divisive. Political parties in the United States are often characterized by their promotion of diversity of ideas and the creation of ideological conflicts. While political parties can foster collaboration and consensus to some extent, the overall nature of American politics is more divisive in terms of promoting diverse perspectives and conflicting ideologies.