Final answer:
The National Assembly in France took the Tennis Court Oath on 20th June 1789, promising not to disband until a new constitution had been written. This led to the creation of a constitution that reduced monarchical power and ensured equality before the law, playing a crucial role in the French Revolution.
Step-by-step explanation:
On 20th June 1789, the National Assembly in France took a significant oath known as the Tennis Court Oath. In amidst of the escalating tensions of the French Revolution, the National Assembly, primarily consisting members of the Third Estate representing commoners and middle-class citizens, vowed not to disband until they had drafted a new constitution for France challenging the absolute monarchy led by King Louis XVI.
This oath paved the way for the National Assembly to create a new constitution in 1791 that reduced monarchical power, ensured equality before the law, and upheld rights like liberty and property.
Learn more about Tennis Court Oath