Latvia as its currency since 1 January 2014, replacing the Latvian lats. The name "Latvija" is derived from the name of the ancient Latgalians, one of four Indo-European Baltic tribes (along with Couronians, Selonians and Semigallians), which formed the ethnic core of modern Latvians together with the Finnic Livonians. Henry of Latvia coined the latinisations of the country's name, "Lettigallia" and "Lethia", both derived from the Latgalians. The terms inspired the variations on the country's name in Romance languages from "Letonia" and in several Germanic languages from "Lettland". Around 3000 BC, the proto-Baltic ancestors of the Latvian people settled on the
Baltic Way (mathematical contest) Baltic Way (mathematical contest) Originally, the three Baltic states participated, but the list of invitees has since grown to include all countries around the Baltic Sea; Germany sends a team representing only its northernmost parts, and Russia a team from St. Petersburg. Iceland is invited on grounds of being the first state to recognize the newfound independence of the Baltic states. Extra "guest" teams are occasionally invited at the discretion of the organizers: Israel was invited in 2001, Belarus in 2004 and 2014, Belgium in 2005, South Africa in 2011 and the Netherlands in 2015. Responsibility for organizing the contest