Source A: Excerpt from a French historian

'In 1789, discontent among the Third Estate grew as economic hardship and political inequality persisted. The Third Estate, feeling ignored by the King and nobles, took a bold step by swearing an oath not to disband until they had created a new constitution.' Provenance: Modern historian's summary, published in 2000.

Source B: Economic crisis and political unrest

'In 1789, France faced severe economic problems, including poor harvests, rising bread prices, and widespread hunger. These issues intensified dissatisfaction with the monarchy and the privileged classes.' Provenance: Historical analysis, published in 2010.

Source C: Historical analysis

'The Tennis Court Oath marked a turning point, as it signaled the start of active opposition to the monarchy. It led to the formation of the National Assembly and increased tensions in France.' Provenance: Academic book, published in 2015.

Source D: Modern historian's perspective

'The Tennis Court Oath was a catalyst for the French Revolution, inspiring further revolutionary actions and the eventual fall of the monarchy.' Provenance: Scholarly article, published in 2018.