Peter I of Russia defeats Charles XII of Sweden at the Battle of Poltava, thus effectively ending Sweden's status as a major power in Europe.

Peter I, better known as Peter the Great, was the Tsar of all Russia from 1682 and the first Emperor of all Russia from 1721 until his death in 1725. He reigned jointly with his half-brother Ivan V until 1696. From this year, Peter was an absolute monarch, an autocrat who remained the ultimate authority and organized a well-ordered police state.

Charles XII, sometimes Carl XII or Carolus Rex, was King of Sweden from 1697 to 1718. He belonged to the House of Palatinate-Zweibrücken, a branch line of the House of Wittelsbach. Charles was the only surviving son of Charles XI and Ulrika Eleonora the Elder. He assumed power, after a seven-month caretaker government, at the age of fifteen.

The Battle of Poltava took place 8 July 1709, was the decisive and largest battle of the Great Northern War. The Russian army under the command of Tsar Peter I defeated the Swedish army commanded by Carl Gustaf Rehnskiöld. The battle would lead to the Swedish Empire losing its status as a European great power and also marked the beginning of Russian supremacy in eastern Europe.