With the creation of the Kingdom of Prussia in 1701 and the proclamation of the Russian Empire in 1721, two powerful new states emerged that began to interact.

They fought on opposite sides during the War of the Austrian Succession (1740 – 1748), but the war saw both grow in power.
Russia defeated Sweden and Prussia defeated Austria.
Russia and Prussia again were at odds during the Seven Years' War (1756–1763) and fought the battles of  Gross-Jägersdorf, Zorndorf, Kay and Kunersdorf.
 However, when Russian Tsar Peter III came to power, he made peace with Prussia by signing the Treaty of Saint Petersburg, allowing Prussian King Frederick the Great to concentrate on his other enemies.

Prussia and Russia in agreement with Austria then cooperated to carve up Poland-Lithuania between them in 1772, 1793, and 1795.
Poland disappeared from the map.

Both Russia and Prussia had absolute monarchies that reacted sharply when the French Revolution executed the king.
They at first were part of the coalition against the new French regime during the French Revolutionary Wars and later the Napoleonic Wars.
 During the Napoleonic era (1799 to 1815) Austria, Prussia, and Russia were at one time or another in coalition with Napoleon against his arch-enemy Great Britain.
In the end, the two German states of Austria and Prussia united with Russia and Britain in opposing Napoleon.
That coalition was primarily a matter of convenience for each nation.
 The key matchmaker was the Austrian Chancellor Klemens von Metternich,  who forged a united front that proved decisive in overthrowing Napoleon, 1813-1814.

Russia was the most powerful force on the continent after 1815 and played a major role in the Concert of Europe which included France, Russia, Austria and Britain, but not Prussia.
In 1815, the Holy Alliance consisting of Prussia, Russia and Austria was completed in Paris.
The revolutions of 1848 did not reach Russia, but its political and economic system was inadequate to maintain a modern army.
 It did poorly in the Crimean War.
 As Fuller notes, "Russia had been beaten on the Crimean peninsula, and the military feared that it would inevitably be beaten again unless steps were taken to surmount its military weakness."
The Crimean War marked the end of the Concert of Europe.
Prussia was shaken by the Revolutions of 1848 but was able to withstand the revolutionaries' call to war against Russia.
 Prussia did go to war with Denmark, however, and was only stopped by British and Russian pressure.
Prussia remained neutral in the Crimean War.

Prussia's successes in the Wars of German Unification in the 1860s were facilitated by Russia's lack of involvement.
 The creation of the German Empire under Prussian dominance in 1871, however, greatly changed the relations between the two countries.
With the creation of the Kingdom of Prussia in 1701 and the proclamation of the Russian Empire in 1721, two powerful new states emerged that began to interact.
They fought on opposite sides during the War of the Austrian Succession (1740 – 1748), but the war saw both grow in power. Russia defeated Sweden and Prussia defeated Austria. Russia and Prussia again were at odds during the Seven Years' War (1756–1763) and fought the battles of  Gross-Jägersdorf, Zorndorf, Kay and Kunersdorf.  However, when Russian Tsar Peter III came to power, he made peace with Prussia by signing the Treaty of Saint Petersburg, allowing Prussian King Frederick the Great to concentrate on his other enemies.
Prussia and Russia in agreement with Austria then cooperated to carve up Poland-Lithuania between them in 1772, 1793, and 1795. Poland disappeared from the map.
Both Russia and Prussia had absolute monarchies that reacted sharply when the French Revolution executed the king. They at first were part of the coalition against the new French regime during the French Revolutionary Wars and later the Napoleonic Wars.  During the Napoleonic era (1799 to 1815) Austria, Prussia, and Russia were at one time or another in coalition with Napoleon against his arch-enemy Great Britain. In the end, the two German states of Austria and Prussia united with Russia and Britain in opposing Napoleon. That coalition was primarily a matter of convenience for each nation.  The key matchmaker was the Austrian Chancellor Klemens von Metternich,  who forged a united front that proved decisive in overthrowing Napoleon, 1813-1814.
Russia was the most powerful force on the continent after 1815 and played a major role in the Concert of Europe which included France, Russia, Austria and Britain, but not Prussia. In 1815, the Holy Alliance consisting of Prussia, Russia and Austria was completed in Paris. The revolutions of 1848 did not reach Russia, but its political and economic system was inadequate to maintain a modern army.  It did poorly in the Crimean War.  As Fuller notes, "Russia had been beaten on the Crimean peninsula, and the military feared that it would inevitably be beaten again unless steps were taken to surmount its military weakness." The Crimean War marked the end of the Concert of Europe. Prussia was shaken by the Revolutions of 1848 but was able to withstand the revolutionaries' call to war against Russia.  Prussia did go to war with Denmark, however, and was only stopped by British and Russian pressure. Prussia remained neutral in the Crimean War.
Prussia's successes in the Wars of German Unification in the 1860s were facilitated by Russia's lack of involvement.  The creation of the German Empire under Prussian dominance in 1871, however, greatly changed the relations between the two countries.
Germany–Russia relations