It was given to the US as part of the 1819 Adams-Oniś Treaty
The Tang and Song rule is described to be the reunification and renaissance in Chinese civilization mostly due to the fact of military advancements, rapid expansion, the Civil Service Exams and taxation methods that developed over time. Li Yuan, Duke of Tang, established the golden age of Tang because of his rapid expansion and strong Chinese bureaucracy. The Civil Service exams created opportunities for families to raise their rank in the social and political hierarchy. The Song dynasty valued scholars over military, making them weak to invaders yet highly cultural and innovative.
Answer
4 and 5
Explanation
A constant term in an expression is a term that does is independent of any variables. This means that constant term will have non of the variables 
attached to them. In the expression 
we notice that the terms integers 4 and 5 are the only terms that are not coefficients of any of the variables in the expression.
