Why did western european countries in the 15th century feel they needed to develop new trade routes?
a. the ottoman empire and venice controlled existing trade routes to asia and made european merchants pay taxes.
b. the western european countries had run out of goods to trade and needed to find new sources of goods.
c. the old trade routes led to asian countries that had weak economies and produced very low-quality goods.
d. the deserts and mountains to the east made it far too difficult for merchants to travel on traditional routes.

A. The Ottoman Empire and Venice controlled existing trade routes to Asia and made European merchants pay taxes.

Explanation:

As the Ottoman Empire extended, it began dealing with critical exchange courses. The catch of Constantinople (1453) to the Ottoman Turks was a key occasion. Alongside their triumph, they presently had noteworthy control of the Silk Road, which European nations used to exchange with Asia. Numerous sources express that the Ottoman Empire "hindered" the Silk Road. This implied while Europeans could exchange through Constantinople and other Muslim nations, they needed to make good on high government expenses. Hassock Europe relations weren't constantly perfect in light of the fact that a distinction in religion appears to have assumed a vital role with their individual societies.

b. germany and italy

independent innovation during the abbasid caliphate