Modern borders were formed in 1920 along with the emergence of the Azerbaijan Soviet Socialist Republic, which then entered the Transcaucasian Socialist Federative Soviet Republic, and with it to the USSR.
ຂອບເຂດທັນສະໄຫມໄດ້ຖືກສ້າງຕັ້ງຂຶ້ນໃນ 1920 ພ້ອມກັບການປະກົດຕົວຂອງສາທາລະນະລັດສັງຄົມນິຍົມ Azerbaijan Soviet, ເຊິ່ງຫຼັງຈາກນັ້ນເຂົ້າໄປໃນ Transcaucasian Socialist Federative Soviet Republic, ແລະກັບມັນກັບສະຫະພັນລັດເຊຍ.