Fertile soil along the Huang River starts out as a dislike material called​

Loess

Explanation:

Loess is a dust like materials that has a fine layer. It is very light and loosely packed which is where it gets its name because Loess means loose in German.

Loess is very rich in minerals because it is created by wind blowing dust and silt from place to place until they settle. In places like the Huang river, loess will eventually become fertile soil that is very useful for farming.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.