**Nations Utilizing the US Dollar as Currency:**
1. **Ecuador** – Adopted the US dollar in 2000 to enhance its economic stability.
2. **El Salvador** – Adopted the US dollar in 2001, mainly due to the impact of remittances.
3. **Panama** – Utilizes the US dollar together with its own currency.
4. **Zimbabwe** – Employed the US dollar during times of hyperinflation.
5. **Palau** – Employs the US dollar.
6. **Timor-Leste** – Employs the US dollar.
7. **US Territories** – Comprises Puerto Rico, US Virgin Islands, American Samoa, Guam, Saipan, and the Marshall Islands.
**Nations with Currencies Linked to the US Dollar:**
1. **Belize** – Belize dollar is linked at 2 to 1 US dollar.
2. **Caribbean Islands** – Includes Bahamas (1 to 1), Bermuda, Curacao, Bonaire, Saba, St. Eustatius, Saint Maarten, Aruba, Antigua, Dominica, St. Kitts, St. Lucia, St. Vincent and the Grenadines, Grenada, Trinidad and Tobago.
3. **Cuba** – Cuban peso linked at 25 to 1 US dollar.
4. **Hong Kong** – Hong Kong dollar linked between 7.75 to 7.85 to 1 US dollar.
5. **Middle East** – Includes Bahrain (0.376), Oman (0.385), Qatar (3.64), UAE (3.67), Saudi Arabia (3.75), Jordan (0.71).
6. **Africa** – Djibouti and Eritrea link their currencies to the US dollar.
7. **Costa Rica** – Currency traditionally linked between 500 to 530 to 1 US dollar.
8. **Cambodia** – US dollar widely utilized alongside the local currency.
These nations offer stable exchange rates for travelers utilizing US dollars, providing a safeguard against currency market volatility.