105 years have passed since the establishment of the Azerbaijan Democratic Republic, the first democratic secular state in the Muslim East, on May 28, 1918. Independence Day has been celebrated in the liberated lands for already three years. At the plenary session of the Azerbaijani Parliament on October 15, 2021, a new law "On Independence Day" was adopted. On the same day, President Ilham Aliyev approved the law. With the approval of the law, May 28 - Republic Day and October 18 - State Independence Day were renamed. May 28 was declared 'Independence Day', and October 18 was declared 'Day of Restoration of Independence'. The Russian Empire collapsed during the February Revolution of 1917. The national movement of the peoples that were oppressed by the Tsarist state in the country began. On May 28, 1918, the Azerbaijan Democratic Republic (1918-1920) – the first secular democratic state founded in the Muslim East.