Rearrange the following sentences in correct order.

(a) In 1271 he set out from Venice to China. He was then 15 years old.
(b) They had travelled by land and sea.
(c) For transport they had used ships, camels, horses and donkeys.
(d) He was accompanied by his father and uncle.
(e) They also travelled over mountains and across deserts.
(f) Marco Polo was born in 1256 in Venice. He was one of the greatest adventurous men.
(g) It took the Polos over three years to reach China.
(h) Actually, at that time journey was very difficult because of no speedy vehicles.