 Complete the following phrase:  Under Stephen the Great, who took the throne and subsequently came to an agreement with Casimir IV of Poland in 1457, the state reached its most glorious period. Stephen blocked Hungarian interventions in the Battle of Baia, invaded Wallachia in 1471, and dealt with Ottoman reprisals in a major victory the 1475 Battle of Vaslui; after feeling threatened by Polish ambitions, he also attacked Galicia and resisted Polish reprisals in the 