Một hệ thống gồm các khái niệm và mối quan hệ giữa các khái niệm đó, dùng để giải thích một hiện tượng nào đó, là định nghĩa của?

Even before world war ii had ended, it was apparent that the allies would not remain friends in the post-war era. describe how the conflict between the superpowers manifested itself in the two following region: asia

What name is given to the money that had to be paid by germany in ww2

What is the rule relating the ratio of marginal utility to prices of two goods at the optimal choice? explain why, if this rule does not hold, the choice cannot be utility-maximizing.