For 10 points, identify this 6-foot-8 Russian tsar, whose program of modernization included the founding of a new capital at Saint Petersburg.
This ruler's navy was victorious at the battle of Gangut, and this ruler's army put down the Bulavin rebellion in Astrakhan. This ruler, who suppressed a rebellion of a guard called the Streltsy, replaced a chief religious figure of his empire with the Holy Synod, and created a merit-based advancement system called the Table of Ranks. This leader went on a "Grand Embassy" to the rest of Europe and defeated Charles XII of Sweden at Poltava, ending the Great Northern War. For 10 points, identify this 6-foot-8 Russian tsar, whose program of modernization included the founding of a new capital at Saint Petersburg.
This ruler's navy was victorious at the battle of Gangut, and this ruler's army put down the Bulavin rebellion in Astrakhan.
Peter I [or Peter the Great; or Pyotr I; or Pyotr Veliki;, or Pyotr Alexeyevich Romanov; prompt partial answers]