Charles I was really guillotined because he thought that the authority of the monarch was that he wanted dictatorship.

As a result, Louis XVI broke through the Magna Carta, and Britain became an unwritten rule for centuries, so it was opposed by the British people.

2, the king is different:

Charles I was killed because of his inability to govern the country and the intensification of domestic contradictions. Textbooks only talk about British and French history. Does not explain the historical background at that time.

Louis XVI was the king of France, and the king of England was too eager to take power to think about the reversal of history. The French king is a playmaker who doesn't know how to govern the country.

Another feature of Charles I's reign was chaotic religious conflicts. The subjects generally distrust their king's beliefs. On the one hand, they successfully helped the Protestant forces because of the mistakes of the Thirty Years War, but on the other hand, they married a Roman Catholic princess.

Extended data

The chaos caused by the death of Charles I had a very adverse impact on the economic development of France. The smooth transition of Britain's glorious revolution avoided a huge impact on society, thus ensuring that the country's economic and military strength was not greatly affected. The British saved the position of the empire. France is not so lucky. Many revolutions have transformed France from a European leader into a completely mediocre country.

Charles I also reused controversial church figures at that time. Many of his subjects believe that this makes the relationship between the Church of England and the Roman Catholic Church too close. Later, Charles I tried to force Scotland to carry out religious reform, which led to the episcopal war. All these made the parliaments of England and Scotland stand firm and eventually contributed to the demise of Charles I.

In the last years of Charles I, the English Civil War broke out between him and Parliament. At the same time, he formulated a series of religious policies, which aroused the dissatisfaction of Calvinists represented by Puritans. After Charles I was defeated in the First English Civil War, Congress wanted him to accept constitutional monarchy.

References:

Baidu Encyclopedia-Charles I

References:

Baidu Encyclopedia-Louis XVI