The Baltic languages form one branch of the Indo-European language family. In this group there are two extant languages: Latvian and Lithuanian, and many extinct languages, including Old Prussian. The last was spoken in Prussia, the area of today's Kaliningrad, but with the ongoing germanisation of Prussians, it became extinct. Sometimes linguists connect this group with the group of Slavic languages. Lithuanian is thought to be one of the oldest and least changed Indo-European languages.
For the relationship of languages and for samples of Baltic languages see: Language families and languages