when was poland established
Rating Newest Oldest. Best Answer: - The first Polish state was established in 966. - In 1795, the Third and the last of three military partitions of Poland ended the existence of the Polish-Lithuanian Commonwealth. - In 1918, Poland regained its independence as the Second Polish Republic (Reconstitution of Poland). - The People's Republic of Poland was proclaimed in 1952. - The Third Republic of Poland (a democratic state) was proclaimed in 1989.