Answer:
The Chesapeake Bay.
Step-by-step explanation:
A modern French admiral writes that in the seminal Virginia Capes sea battle, while de Grasse was not as aggressive as a Suffren or a Rodney might have been, “la prudence et le sang-froid” (prudence and coolness under fire) had produced the essential victory—complete control of Chesapeake Bay.
Hope this helped a little!