Which would be the least effective way to manage expenses when travelling internationally?

Name: Which would be the least effective way to manage expenses when travelling internationally?
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Question

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Money orders are one of the least effective ways to manage expenses when travelling internationally because they are not widely accepted and may be difficult to cash in certain countries. Credit cards, debit cards, and traveler's checks are all more widely accepted and provide more convenience and security.

Which Would Be the Least Effective Way to Manage Expenses