Answer:
All of the following are correct except a) they feared taking their conquest overseas,and therefore never built a navy
Explanation:
Mongolian empire was the second largest empire by land area. Under their leader Genghis Khan , the mongols enjoyed great success and at its peak controlled an area equal to the size of Africa.
Under Genghis khan's rule , people were given the permission to practice any religion they want, so therefore we can say that option c) is definitely true.
Under Genghis Khan's rule trade was also encouraged among the people and also the first international post system was also made under his reign, so from this statement we can also conclude that option d) is also correct.
The yuan dynasty which was founded in 1271, by the descendant of Genghis khan whose name was Kublai khan, tried conquering Japan during the 13th century. He sent his navy twice towards the Korea strait to conquer Japan but both of the times his fleets were struck by powerful storms and got wrecked. So from the above statement we can definitely say that the statement a) is false and all other are correct.
