What are four monetary instruments that can be used to pay for goods and services while overseas?

Four monetary instruments that can be used to pay for goods and services while overseas include cash (local currency), credit cards, debit cards, and traveler's checks. Cash is often accepted everywhere, while Credit and Debit Cards provide convenience and security, especially in urban areas. Traveler's checks, though less common today, can be a safe way to carry money and are easily replaceable if lost or stolen. Always check for any foreign transaction fees associated with card use.