Big Idea. When Justinian became emperor in 527, he was determined to revive the ancient Roman Empire, to build a new Rome. He established Constantinople as the capital of the Byzantine or Eastern Roman Empire and preserved Roman heritage for more than a thousand years.
The best choice would be the Nanjing Massacre led to the increased tension between the United States and Japan in the year 1937. This is because didn't like what the Japanese did in China and in other parts of Asia. The killings they made to many are not really favorable to the U.S.
Gunpowder was invented by the Chinese, so the answer to your only question is A: Chinese.