Organize the following social and economic groups in order from the lowest to highest.
serfs
nobles
clergy
merchants
monarchs
artisans knights

Assuming this is the social hierarchy of the feudal system in the Middle Ages in Europe , the lowest would be the Serfs they were the ones that took care of the land of the knights and provided them food followed by the Merchants and Artisans, then were the Knights  who worked for land in exchange of their loyalty and bravery to the next class in charge the Nobles, and at the top of the hierarchy was the Monarch or King and the Clergy who were the ones that ruled of all the land as they were also the ones who made the laws.

1) Monarch and Clergy

2)Nobles

3)Knights

4)Merchants and Artisans

5)Serfs

i believe the answer is d.

by 1880, germany had more rail lines than great britain and russia.