Analyze the similarities and differences between Qin State in China during the Warring States Period and the United States now.

Everything upstairs is very detailed. I think the biggest similarity is that Qin is the only hegemonic country in the historical environment, and the biggest difference is that Qin is fundamentally strong in feudal land system, and all of them are governors of the Zhou Dynasty, which can be said to be the overlord of the governors when the country was divided, rather than a sovereign country in the true sense. The United States is an absolutely independent and sovereign country, established by the capitalist system and relying on economic and modern military forces.