Many factors led to the French Revolution. The Revolution was followed by the Seven Years' War, which lasted between 1756 and 1763 and resulted in victory for England. Unfortunately, France's debt increased. France's government faced an even tighter financial situation, when it gave financial support to the American Revolution. Taxes had also increased, and the people of France rose with anger.
A migrant worker often earn's money in a host country and returns a small amount to their home country. This money then flows into the economy and can greatly benefit the home country over time.