I would say D is the correct answer.
Answer:
The correct answers are b and d
Explanation:
I just did the question
A map of the land trade route from Europe to Asia along the Silk Road. Image credit: M’ ships brought Europeans valuable goods, traveling between the port cities of western Europe and the East from the 10th century on along routes collectively labeled the Silk Road. However, transporting goods along the Silk Road was costly, slow, and unprofitable. Muslim middlemen collected taxes as the goods changed hands. Robbers waited to ambush treasure-laden caravans.
As well as seeking a water passage to the wealthy cities of the East, sailors wanted to find a route to the exotic and wealthy Spice Islands in modern-day Indonesia, whose location was kept secret by Muslim rulers. The lure of profit pushed explorers to seek new trade routes to the Spice Islands and to eliminate Muslim middlemen.
Answer:
decrease in sea levels
increase in vegetation
warmer global climate
Explanation:
This all helped in making human surivial easier.
