What did spain do after the american revolution to discourage america settlements west of the appalachian mountain

One of the things that Spain did after the American Revolution to discourage American settlements west of the Appalachian Mountains was to fortify many of their pre-existing forts in the area to make them seem more intimidating. 

Explanation:

This is because they closed the ports to New Orleans which made American trade more difficult and enraged the society.

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.