Islam’s historical role in central asia

Islam came to Central Asia in the early part of the 8th century as part of the Muslim conquest of the region. Many well-known Islamic scientists and philosophers came from Central Asia, and several major Muslim empires, including the Timurid Empire and the Mughal Empire, originated in Central Asia.

Explanation:

Answer (A)
One of the primary effects of railroads on farmers is the decrease that railroads bring to farmers' transportation costs. Most obviously, it becomes cheaper to transport crops to the cities and ports. In addition, farmers can buy and transport industrial goods back to farms, including farm equipment and cattle.