The colonies of St. Thomas, St. John, St. Croix, Ghana, Tharangambadi, Serampore, and Nicobar Islands were involved in what 1807-1814 war?
Gunboat War: The Gunboat War (1807–1814) was the naval conflict between Denmark–Norway and the British Navy during the Napoleonic Wars. Denmark–Norway:  In addition, the state included colonies: St. Thomas, St. John, St. Croix, Ghana, Tharangambadi, Serampore, and Nicobar Islands.
The Gunboat War