Your question is somewhat confusing.
If you are asking which country in the world has the most valued and least valued currency, then they are:
Kuwait - Kuwaiti Dinar (most)
Somalia - Somali Shilling (least)
If you are asking which island country in the world has the most valued and least valued currency, then they are:
Bahrain - Bahraini Dinar (most)
São Tomé and Príncipe - São Tomé and Príncipe Dobra (least)
The highest point in Indiana, at 1,257 feet above sea level, is located in Franklin Township in Wayne County. To visit the highest point, take a relaxing drive in the country, going north on State Road 227 to Bethel. Go west (left) on Bethel Road. Turn north (right) on Elliot Road
Mount Everest is the highest point above sea level - 8848 meters high. Marianas Trench is the lowest point below sea level - 10 924 meters deep.
Panorama Point in the extreme southwest corner of Nebraska at 5,424 feet in elevation is the highest and it is not a mountain or even a hill. At 840 feet in elevation is the lowest point on the Missouri River.
At sea level it's 0m but the highest point is mount cook
Egypt is the only African country that borders both the Red Sea and the Mediterranean Sea.
Tunisia is the smallest African country that borders the Mediterranean Sea.
Florida has the smallest difference in elevation from its highest point, which is Britton Hill at 345 feet above sea level, to its lowest point at sea level.
The 19th smallest country in the world is Cyprus, an island country in the Eastern Mediterranean Sea.
Antarctica is the highest continent on earth. The highest country is Nepal.
The smallest is the Vatican City. The link below shows them all.
Tunisia.
Tblisi, Georgia.
The Smallest country in North America is Saint Kitts and Nevis.
India!(indian ocean)
The European country with the highest elevation is Switzerland, with its highest point being the summit of Monte Rosa at 15,203 feet (4,634 meters) above sea level.
The Principality of Sealand is considered the smallest British country. The Principality of Sealand is located in the North Sea.
Jamaica is an island country in the Caribbean Sea. As of June 2014, Jamaica's currency is the Jamaican dollar, which has been in use since 1969.