The ottoman, safavid, and mughal empires are sometimes referred to as the gunpowder empires because of their use of gunpowder when conquering. these empires would have not been exposed to gunpowder had it not been for

The correct answer is B) the Silk Roads.

The other options of the question were A) Marco Polo. C) China's Grand Canal. D) the Great Wall of China.

The Ottoman, Safavid, and Mughal Empires are sometimes referred to as the gunpowder empires because of their use of gunpowder when conquering. These empires would have not been exposed to gunpowder had it not been for the Silk Roads.

In ancient times, the Silk Road was a series of roads that connected China, Asia, North Africa, India, and Europe. These roads mainly served as trade routes that served to transport people and goods. During many years, nations used these roads and sea routes to trade species, animals, precious metals, crops, and also to spread diseases.  

a

explanation:

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.