Lao kip Lao kip The kip (; code: LAK; sign: ₭ or ₭N; ; officially: ເງີນກີບລາວ, lit. "currency Lao kip") is the currency of Laos since 1952. Historically, one kip was divided into 100 "att" (). In 1945–1946, the Free Lao government in Vientiane issued a series of paper money in denominations of 10, 20 and 50 att and 10 kip before the French authorities took control of the region. The kip was reintroduced in 1952, replacing the French Indochinese piastre at par. The kip (also called a "piastre" in French) was sub-divided into 100 att (Lao: ອັດ) or "cents" (French: Centimes).
Optimum currency area rationale behind the creation of the euro is that the individual countries of Europe do not each form an optimal currency area, but that Europe as a whole does. The creation of the euro is often cited because it provides the most modern and largest-scale case study of an attempt to identify an optimum currency area, and provides a comparative before-and-after model by which to test the principles of the theory. In theory, an optimal currency area could also be smaller than a country. Some economists have argued that the United States, for example, has some regions that do not