English: What were some significant events during the rule of Feodor II of Russia?
translation: 在費奧多爾二世的統治期間，發生了哪些重大事件？
translation: 俄羅斯費奧多爾二世統治期間發生了哪些重大事件？
translation: 在費奧多爾二世統治期間，發生了哪些重大事件？