Wang Mang usurped the Han Dynasty and died miserably, but why did Cao Cao usurp the Han Dynasty and die miserably?

Wang Mang is the nephew of the Queen Wang of the Han Dynasty. His father died early and was not sealed, so Wang Zhengjun took him to the palace to raise him. Before his death, his great uncle Wang Feng entrusted him to Emperor Cheng and set foot on his official career.

Wang Mang's affectation, making friends with celebrities and ministers, won the hearts of the people and achieved Fu's high position. The Han Dynasty mourned the emperor, and the consorts were excluded, and Wang Mang went home to live in seclusion. When Emperor Ai died, Wang Mang returned to Beijing, took charge of military and political power in the name of the Queen Mother, and established the nine-year-old emperor Han Ping. The empress dowager is in charge of the imperial court, and the government belongs to Wang Mang.

Wang Can mang usurped the Han Dynasty? Why?

In the first year of Yuan Dynasty (A.D.), Wang Mang was named "An Hangong". In the second year, she married her daughter to Pingdi as the queen. In the fifth year of Yuan Dynasty, she was given "Nine Tin". Shortly after the death of Emperor Han Ping, a two-year-old boy was made emperor, and he acted as emperor himself, calling him a "fake emperor".

In 8 AD, Wang Mang forced obedient children to abdicate and succeed to the throne, with the title "Xin". At this point, Wang Mang completely usurped the Han Dynasty as his own.