In the 1500s new trade networks developed that went beyond those established by

Arabs

Explanation:

In the 1500s, new trade networks developed that went beyond those established by the Arabs. Most of the trade in the world went through the Middle East thanks to Arab routes, as these connected Europe, Africa and Asia. However, as Europeans began to discover new territories in the 1500s, they began to trade with these areas, expanding trade through networks that went beyond those established by the Arabs.

b or c im pretty sure

the correct answer is:   the domino theory states that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.