Final answer:
The cultural relations between Mexico and the USA are complex, with Mexico having a more cohesive culture and the USA being more diverse. The USA has also had more cultural innovations.
Step-by-step explanation:
The cultural relations between Mexico and the USA are complex and have evolved over time. One key difference is the level of ethnic diversity and assimilation. While Mexico has a more cohesive and monolithic culture due to a history of intermarriage among Europeans, indigenous people, and Africans, the USA has a more diverse and multicultural society. Additionally, the USA has had more cultural innovations, such as rock n' roll and basketball.