Why did france declare war on austria?

French success in these conflicts ensured the spread of revolutionary principles over much of Europe. ... Anticipating an attack, France declared war on Prussia and Austria in the spring of 1792 and they responded with a coordinated invasion that was eventually turned back at the Battle of Valmy in September. read more

Anticipating an attack, France declared war on Prussia and Austria in the spring of 1792 and they responded with a coordinated invasion that was eventually turned back at the Battle of Valmy in September. This victory emboldened the National Convention to abolish the monarchy. read more

They also despised Austria's king, Leopold II, Mary-Antoinette's brother and Holy Roman Emperor. The National Assembly declared war on Leopold which could easily have been avoided, and Fredrich William II, king of Prussia declared war on France, to help their ally. read more

- People like Barnave and Robespierre in France opposed the war, and in Austria the emperor Leopold II, brother of Marie Antoinette, may have wished to avoid war, but unfortunately he died on 1 March 1792. read more