So back to work....
Marsala is a city in the west section of Sicily, the island near the foot end of Italy. In 1798 the Sicilians managed to substitute their own wines in place of the standard rum in an English naval shipment. In those seafaring days, something had to be done to wine to allow it to last the long ocean journeys. Brandy was added to allow the wine to last longer, and to be more resistant to temperature changes. These were called "fortified wines".
Once the British tasted Marsala wine the demand grew. In the United States during prohibition Marsala wine was bottled to look like medicine. This made it less risky to get wine. Although not as popular now for drinking, Marsala wine is still used in cooking.