Depending on which area of the US will affect what the name of the body of water that is separates the US from Cuba. if youre relating to Florida, US, then it would be the Straits of Florida, with the Atlantic Ocean to the east and the Gulf of Mexico to the west. its probably best to use a map to make it clear to yourself
That is, Mars appears to move fromwest to east from one night to the next. Every two years or so, there are a couple of months when Mars' position from night to night seems to change direction and move east to west.