This took place on June 20, 1789 when the King refused to recognize the "National Assembly" and declared the activites of the Third Estate illegal. The Tennis Court Oath was where the Third Estate swore not to seperate until a consititution had been written for France, this took place at an indoor tennis court at Versailles.

This Oath made the King call a meeting of all three orders and at the end of the meeting he ordered the Third Estate to disperse which they refused. Since the King was unwilling to use force, he eventually ordered the first and second estates to join the new National Assembly.

The Tennis Court Oath was the promise that one day there would be a consititution for France.