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.
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.
India!(indian ocean)
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.
Smallest country in the world is The Holy See: the micro- state of Vatican City, Europe. Second smallest in the world by land area is Monaco, Europe. By population, the island nation of Nauru in the Pacific is the second smallest.
by name red sea is smallest, though not a proper sea
The Baltic Sea is not the smallest, both the Persian Gulf and the Yellow Sea are smaller
The sea of marmara is considered the smallest sea which separates turkey's Asian and European parts.