Final answer:
Cajun and Creole cultures were significantly influenced by African American culture, which played a vital role in the development of Creole languages and other cultural practices in southern Louisiana.
Step-by-step explanation:
The cultural influences on Cajun and Creole cultures are quite diverse, but when considering the options presented in the question, the strongest influence comes from African American culture. This is due to the Africans and Europeans communication and creation of Creole languages in the Americas, influenced by African languages, customs, and traditions. Louisiana Creole, for instance, is a mix of French and African languages, with the addition of elements from Haitian Creole. This cross-cultural communication and language development were essential for survival and resistance among the enslaved African populations. Creole and Cajun French manifest these linguistic transformations, revealing a significant African imprint on the culture and language in southern Louisiana.