We don't have enough information to answer this question, but i believe what you're trying to find is that the Muslim armies carried their faith west across the top of the entire continent.
Hopes this helps, if it doesn't please add information onto your question, like example, the choices you were given.
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c. free speech
John Dickinson authored Letters from a Farmer in Pennsylvania. He created a draft of fifteen proposals, criticizing the Stamp Act as unconstitutional. Because of his letters, the Stamp Act was revoked after only four months of the unproductive process.
Financial experts warned the public the the American Economy is slowing down. With this warning in mind, investors started selling their shares in large numbers in September 1929. By 24th October 1929, 12.8 million shares were sold and another 16 million shares were sold at a very low price on 29th October 1929. The panic selling of shares lead to the collapse of the stock market in New York.
The aftermath of the wall street crash was very disastrous. Investors lost their money and was not able to pay off their debts. Many banks closed, leaving their depositors with no money nor hope for the future. Ordinary people lost their means to buy foods and other basic needs like shelter and clothes. Companies have to downsize resulting to firing of redundant workers and lowering the wages of the remaining workers. Unemployment rose to very high level.
The Wall Street Crash led to the beginning of the Great Depression in the 1930s.
I believe it is true, I think what your asking is related to the United Nations
Dynastic cycle (traditional Chinese: 朝代循環; simplified Chinese: 朝代循环; pinyin: Cháodài Xúnhuán) is an important political theory in the Chinese history. According to this theory, each dynasty in Chinese history, rises to a political, cultural, and economic peak and then, because of moral corruption, declines, loses the Mandate of Heaven, and falls, only to be replaced by a new dynasty. The cycle then repeats under a surface pattern of repetitive motifs.[1]
It sees a continuity in Chinese history from early times to the present by looking at the succession of empires or dynasties, implying that there is little basic development or change in social or economic structures.[2] John K. Fairbank expressed the doubts of many historians when he wrote that "the concept of the dynastic cycle... has been a major block to the understanding of the fundamental dynamics of Chinese history."[3]