What was a significant factor in the demise of Dutch settlements in the Americas?

In the 18th century, the Dutch colonial empire began to decline as a result of the Fourth Anglo-Dutch War of 1780–1784, in which the Netherlands lost a number of its colonial possessions and trade monopolies to the British Empire and the conquest of the wealthy Mughal Bengal at the Battle of Plassey.

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.