In 1699, a truce between Poland and Turkey led to Poland acquiring Arabians, which led to the breeding of these prized horses to grow thanks to the increased bloodstock. When WWI happened, nearly all the breeding stock was wiped out. Fortunately, the Polish people built the breeding program back up, and the Arabian Horse Breeding Society was formed in 1926. The Polish breeding program has always been based on broodmares. There are many damn lines in use, with the sire lines being more diverse.