Flags of the Holy Roman Empire
In 1804, Napoleon Bonaparte declared the First French Empire. In response to this, Emperor Francis II of the Habsburg dynasty declared his personal domain to be the Austrian Empire and became Francis I of Austria. Taking the colours of the banner of the Holy Roman Emperor, the flag of the Austrian Empire was black and gold. Francis II was the last Holy Roman Emperor, with Napoleon forcing the empire's dissolution in 1806. After this point, these colours continued to be used as the flag of Austria until 1918.
18th-century history of Germany
The Holy Roman Empire was formally dissolved on 6 August 1806 when the last Holy Roman Emperor Francis II (from 1804, Emperor Francis I of Austria) resigned. Francis II's family continued to be called Austrian emperors until 1918. In 1806, the Confederation of the Rhine was established under Napoleon's protection.