Why waz Louis XVI executed

The reasons behind the execution were the following:

• Upon his accession , Louis XVI  found an empty treasury. Long years of war had drained the financial resources of France.
• Added to the misery , was the cost of maintaining an extravagant court at the immense palace of Versailles.
• Under Louis XVI, France helped the thirteen American colonies to gain their independence from the common enemy, Britain. The war added to debt that had already risen.
• The state was forced to increase taxes. Yet even this measure would not have sufficed. French society in the eighteenth century was divided into three estates, and only members of the third estate paid taxes.
• The members of the third estate demanded that voting be conducted by the assembly as a whole, where each member would have one vote. This was one of the democratic principles put forward by philosophers like Rousseau in his book "The Social Contract". When the king rejected this proposal, members of the third estate walked out of the assembly in protest.