To many of the leaders in the Assembly it seemed that the existing conditions were intolerable. The emigrant nobles were forming little armies on the boundaries of France and had, as we have seen, induced Austria and Prussia to consider interfering in French affairs. The Assembly suspected that Louis was negotiating with foreign rulers and would be glad to have them intervene and reëstablish him in his old despotic power. The deputies argued, therefore, that a war against the hated Austria would unite the sympathies of the nation and force the king to show his true character; for he would be obliged either to become the nation's leader or show himself the traitor they suspected him to be.

France declares war upon Austria, April, 1792.

The king suspected and his life threatened.

It was with a heavy heart that the king, urged on by the clamors of the Assembly, declared war upon Austria in April, 1792. The unpopularity of the king only increased, however. He refused to ratify certain popular measures of the Assembly and dismissed the ministers who had been forced upon him. In June a mob of Parisians invaded the Palace of the Tuilleries, and the king might have been killed had he not consented to don the "cap of liberty," the badge of the "citizen patriots."

Growth of republican feeling.

When France declared war, Prussia immediately allied itself with Austria. Both powers collected their forces and, to the great joy of the emigrant nobles, who joined them, prepared to march upon France. The early attempts of the French to get a footing in the Austrian Netherlands were not successful, and the troops and people accused the nobles, who were in command of the French troops, of treason. As the allies approached the boundaries it became clearer and clearer that the king was utterly incapable of defending France, and the Assembly began to consider the question of deposing him. The duke of Brunswick, who was at the head of the Prussian forces, took the very worst means of helping the king, by issuing a manifesto in which he threatened utterly to destroy Paris should the king suffer any harm.

Insurrection of August 10, 1792.

Angered by this declaration and aroused by the danger, the populace of Paris again invaded the Tuilleries, August 10, 1792, and the king was obliged to take refuge in the building in which the Assembly was in session. Those who instigated the attack were men who had set their heart upon doing away with the king altogether and establishing a republic. A group of them had taken possession of the city hall, pushed the old members of the municipal council off from their seats, and taken the government in their own hands. In this way the members of the Paris commune became the leaders in the revolution which established the first French republic.