It can be a technique to shorten or make it still at the point of conversation and avoid unrelated issues or situation. It also makes the discussion brief and concise. This provides other people to give their own opinion at a given time. There also might be an allotted time for each people.
Answer:
The tread on the road declined sharply till in the 13th century,when the conquests of the Mongols ushered in an era of frequent and extended contacts between East and West...
With less cost,harassment and danger,many goods and materials that the Silk Road could not transfer were conveyed through the sea route.
Answer:
Egypt was in the hands of foreigners or was engaged in internal problems and civil wars.
Explanation:
Period of Old Kingdom ended with the period of civil wars, that were started by corruption and internal problems in the country. This intermediate period ended with the establishment of new dynasty.
Period of Middle Kingdom ended with invasion of Hyksos who conquered Egypt and ruled for a 50 years.
About three fourths if I’m not mistaken.