Final answer:
Louisiana is a state that includes the Gulf of Mexico, Vermillion Bay, and Atchafalaya Bay, with the latter being part of the largest wetland and swamp in the United States.
Step-by-step explanation:
The state that includes the Gulf of Mexico, Vermillion Bay, and Atchafalaya Bay is Louisiana. The Gulf of Mexico borders the southern edge of Louisiana, providing a rich environment for a variety of economic activities including fishing and oil drilling.
Vermillion Bay and Atchafalaya Bay are smaller bodies of water located within the state, contributing to its diverse aquatic ecosystems and serving important roles in local fisheries and habitats for wildlife. In particular, Atchafalaya Bay is part of the larger Atchafalaya Basin, which is the largest wetland and swamp in the United States.