All of the following are effects of Columbus’s voyages except . a.
Spanish colonization in the Americas
b.
Europeans gained advanced technology
c.
encouragement of further Spanish exploration of the Americas
d.
Europeans became aware of the existence of North and South America

Explanation:

Columbus's voyages opened up the Western hemisphere of the world to Europe. The Old world (Europe) was now aware of the New World (The Americas).

When news of his voyages spread, rumors about gold and silver in this New World spread fast. The monarchy wanted to gain power/territory and strengthen the economy. Individual explorers hoped to get rich and famous, while others also wanted to get more religious support.

Further exploration occurred, as well as more Spanish colonization in the Americas.

The Colombian Exchange allowed for food, animals, diseases, and people to be spread and exchanged, but advanced technology wasn't really gained by the Europeans.

Therefore, the best answer for: Which is not an effect of Columbus's voyages is B. Europeans gained advanced technology.

a. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.

thomas jefferson is the answer