Flag of Germany 3:5 figure. In 1804, Napoleon Bonaparte declared the First French Empire. In response to this, Holy Roman 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. The colours red and white were also significant
National colours of Germany passed a resolution whereafter black-red-gold became the German war and merchant flag. However, as official flag of the German Confederation, the tricolour was mainly used in the small Imperial fleet (Reichsflotte), which was dissolved by 1852. The Frankfurt Constitution, adopted in 1849 and never carried into effect, omitted any provision of national symbols. After the dissolution of the Frankfurt Parliament, the tricolour vanished from public space. Mocked by Heinrich Heine as "old Germanic rubbish", it nevertheless remained the official flag of the German Confederation, "revitalized" in 1866 as the banner of Austria and her allies in the War with Prussia