What was the most powerful and ruthless kingdom?​ (in China)

Qin

Thanks to Shang Yang's reforms, Qin had become the most powerful and ruthless state, and possessed the power to unify the Warring States.

the Ming

However, the Ming is considered to be one of the worst Chinese dynasties, as China suffered a period of intellectual, political, and economic sterility under its rule. The Ming were followed by the Qing, China's last and one of its greatest dynasties, ruling from 1644 to 1911.

Qin Shi Huang

Qin Shi Huang

During his reign, he ordered the construction of a great wall (roughly speaking, the prequel to the modern Great Wall of China), and an enormous mausoleum featuring more than 6,000 life-size terra-cotta soldier figures.

Tang Dynasty

Both Han and Tang Dynasty are considered as the most powerful dynasty in Chinese history..

Sory

Explanation:

The Qin Military Buildup (246–230 BC)

Thanks to Shang Yang's reforms, Qin had become the most powerful and ruthless state, and possessed the power to unify the Warring States.

im pretty sure it has something to do with the end of ww1

i think it was   tsar alexander ii