What factors contribute to the change of a country's currency exchange rate?

Question

What factors contribute to the change of a country's currency exchange rate?

Answer 1

Demand and supply of that currency in the international market. The demand and supply are, in turn, driven by various factors, including imports/exports (or international trade, in general), capital inflows/outflows, or outright regulations by central banks.

A rather crude answer, but hope it helps somewhat....