Answer:
The Silk Road and other trade routes had become too dangerous, expensive and time consuming
Explanation:
Trade routes to Asia and the Middle East had become very dangerous for Europeans because non-friendly empires like Ottoman Empire and the Persian Empire were the middlemen between Europe and Asia.
For this reason, Europeans were pushed to explore alternative trade routes to Asia. In fact, Columbus idea was to sail west to find a new route to Asia, he never expected to land on a whole new continent.
Because Congress also had Southern delegates that would stop any abolition movements when Northern delegates proposed it.
Is there more to the question?
Umm in 1911 the last dynasty the Qing (Ching) became the republic of China
In September 1931, they claimed that Chinese soldiers had sabotaged the railway, and attacked the Chinese army (which had just executed a Japanese<span> spy). The Chinese army </span>did<span> not fight back because it knew that the </span>Japanese<span> were just wanting an excuse to </span>invade Manchuria<span>. ... China appealed to the League of Nations.</span>
