How many sons did Charlemagne have, how could he let his grandson divide the empire?

Charlemagne is usually politically witty and perceptive; But a wise man must make a mistake, and he made a serious mistake in the matter of succession to the throne. Although he had unified a vast region of Western Europe for most of his life, he thought it would be wisest to divide the empire among his three sons after his death. He believed that doing so was often a panacea to avoid war.

However, before he died, his two eldest sons had seered God, and when Charlemagne died in Aachen in 814, his third son, Louis, took over Charlemagne's entire empire. However, Louis was not as decisive as his father in the matter of succession: he also wanted to divide the empire among his three sons.

After some struggle, Louis's three sons finally signed the Treaty of Verdun (843), according to which the Frankish Empire was divided into three parts. The first part consists of parts of present-day France; The second part includes a large area of Germany; The third part includes northern Italy and a wide strip of land across the Franco-German border.

Charlemagne had a total of five sons, but because Charlemagne lived too long--- 72 years old, four of his sons died before him, Louis became the only heir to inherit the huge empire, Louis divided and ruled the empire, the eldest son Lothair was the king of Italy and co-emperor (co-emperor), the second son Pepin was the king of Aquitaine (southern France), and the third son Louis the Germanic (Louis II) was the king of Bavaria, which is the famous "Louis Partition".

Marriage. Charlie had five wives in his lifetime.

In 766, he married himiltrude, but the marriage was dissolved for political and religious reasons, and he had a hunchbacked Pepin[3] (767-813).

In 768, he married Desiderata of the Lombards, the daughter of the Lombard king Desiderius, and divorced in 771, which led to the Italian War of 773 and the subsequent fall of the Lombard Kingdom.

In 771, he married Hildigard, who was born in Swabia, and had nine children, including Charles the Younger, Pepin of Italy, and Louis the Pious.

In 784, he married the Germanic Fastrada, a brutal man.

In 794 Fastrada died, and he married Liutgard of the Alemanni tribe and had no children.

In addition, there were five concubines.

Children. In 792, the hunchbacked Pepin, at the instigation of the Frankish nobles, attempted to kill Charles. After the matter was revealed, Pepin was sent to a monastery to spend the rest of his life.

When Pepin died in 810, Charles appointed his successor, Bernard, to succeed his father in Italy.

Charles Jr. died in 811.

Charlie then crowned Louis the Pious Emperor in Aachen in September 813.

Charlie's refusal to marry off his daughters throughout his life is puzzling and speculative.

Just a son, but the article said that his son was going to kill him, and the incident happened.

The son can't let his wife rule when he leaves, and his grandchildren are also ambitious, so let them divide up.