The book of the famous military historian A.B. Shirokorad talks about the lost lands of Russia. Over the thousand-year history of Russia - Russia - the USSR, numerous conquerors constantly sought to tear away certain lands of our state and even completely deprive it of independence. Until the 20th century, temporarily captured regions returned to Russia, and moreover, the borders of the Fatherland were constantly expanding, especially in the south and east. The political upheavals of the first quarter of the 20th century led to the loss of many Russian outskirts. In 1939-1945, I.V. Stalin returned to our country most of the lost lands.