Which countries have controlled any part of the current territory of China? Including territorial claims of both the People's Republic AND Republic of China!
Disputed territories under Chinese control count
Some of these countries did not exist when the dispute started or no longer exist
Taiwan's claims are constitutional and not actually practiced
And as it includes both the ROC and PRC, the ROC doesn't accept border treaties the PRC have made since 1948, thus the border with Tajikistan is still disputed as per the ROC.
Tajikistan ceded a small amount of Chinese territory in early 2000s, Malaysia controls James Shoal, and South Vietnam controlled the Spratlies until China took control of it in the 70s
The Ottomans never made it anywhere close to China in terms of actual territory controlled. "Vassal" is a very vague definition that does not correspond to territory controlled (or else the UK would historically fall under Chinese control, technically).
This quiz suffers from a serious lack of focus. What counts as a country?
There are many plausible answers to that question, but the quiz lacks a specific, communicated answer.
Why, for example, are you counting Korea and South Vietnam, but not Guge, the Sikh Empire, or Khitai?
What about the multitude of countries that controlled parts of modern China up to, say, 1000 AD? The quiz implies that the first state in China was Korea, which controlled the entire modern territory until 668 AD. Obviously not, but then why is there no other answer during that period? What specifically is the criteria?
There are many plausible answers to that question, but the quiz lacks a specific, communicated answer.
Why, for example, are you counting Korea and South Vietnam, but not Guge, the Sikh Empire, or Khitai?
What about the multitude of countries that controlled parts of modern China up to, say, 1000 AD? The quiz implies that the first state in China was Korea, which controlled the entire modern territory until 668 AD. Obviously not, but then why is there no other answer during that period? What specifically is the criteria?