The currency decline tends to cause assets to rise in value measured in that weakened currency, stimulate export sales, and help the balance of payments adjustment by bringing spending back in line with income. It also lowers imports (by making them more expensive), which favors domestic producers, makes assets in that currency more competitively priced and attractive, creates better profit margins for exported goods, and sets the stage for the country to earn more income from abroad (through cheaper and more competitive exports).
