Frederick William IV, King of Prussia

Frederick William IV became King of Prussia upon the death of Frederick William III .

The unemployed rioted in Berlin, the capital of Prussia.

Frederick William IV committed himself to German nationalism and unification, promising to summon a Constituent Assembly to create a united Prussian Diet, which in turn would consider establishing a national German parliament.

Frederick William IV of Prussia replaced his liberal ministers with a conservative government which adjourned the Constituent Assembly.

The Frankfurt Assembly elected Prussia's King Frederick William IV as Emperor of Germany.

Frederick William IV 's refusal of the imperial crown of Germany signalled the end of the Frankfurt Assembly, which collapsed in December 1849.

Frederick William IV of Prussia established by royal edict his own constitution, which remained in effect until 1918.

King Frederick William IV of Prussia had a stroke which incapacitated him; his brother William became Regent.

William I became King of Prussia when Frederick William IV died.