what is the reason that the U S A becomes the most powerful

What is the most powerful Emotion是什么意思 what is the most important reason that made the League of Na why is America the most powerful country? the reason i like this painting is that it is powerful image what is the reason the employer is making a promise that becomes more valuable 翻译;what is the most popular sport in the U.S. 请问what is the most powerful word in English learning 要3个单词. The fatter a lens,the more powerful it becomes翻译汉语 what's the reason?I would feel more comefortable and that is what is the reason ( A.that is late B.for late C.for being l 英语翻译What is the biggest reason that applications not success