In the aftermath of World War I, the newly independent countries of Lithuania and Poland found themselves in dispute over the Vilnius Region through two conflicts known as the Polish–Lithuanian War and Żeligowski's Mutiny.
These conflicts resulted in the creation of the short-lived Republic of Central Lithuania in 1920.
 A disputed election in 1922 incorporated this territory into the Second Polish Republic through annexation.

As Tverečius was geographically part of the Vilnius Region, and subsequently included in the Republic of Central Lithuania, the town became Polish territory in March 1922: Tverečius found itself incorporated as Twerecz, part of Święciany (Lithuanian: Švenčionys) Powiat (county) in the newly created (1926) Wilno Voivodeship, the northeastern-most province then in Poland.
In the aftermath of World War I, the newly independent countries of Lithuania and Poland found themselves in dispute over the Vilnius Region through two conflicts known as the Polish–Lithuanian War and Żeligowski's Mutiny. These conflicts resulted in the creation of the short-lived Republic of Central Lithuania in 1920.  A disputed election in 1922 incorporated this territory into the Second Polish Republic through annexation.
As Tverečius was geographically part of the Vilnius Region, and subsequently included in the Republic of Central Lithuania, the town became Polish territory in March 1922: Tverečius found itself incorporated as Twerecz, part of Święciany (Lithuanian: Švenčionys) Powiat (county) in the newly created (1926) Wilno Voivodeship, the northeastern-most province then in Poland.
Tverečius