It is dedicated to the solemn proclamation of the act on the unification of the Ukrainian People's Republic and the Western Ukrainian People's Republic into a single independent state. On January 22, 1919, in a solemn atmosphere on the Sofia Square in Kyiv, an event that became the outcome of the relevant preparatory process took place - the Act of Zluki, an act of unification of Ukrainian lands, was proclaimed, which stated that from now on the Ukrainian people, released by a powerful impulse of their own forces, has the opportunity to unite the efforts of all their sons to build an indivisible independent Ukrainian state for the good and happiness of the Ukrainian people.