How did an agricultural surplus relate to expanded trade during the high middle ages? .

The trading surplus of food led to urbanization.

The demand for goods increased and so did the number of craftworkers in town. Older tows began to grow and new ones were built as rural peasants migrated to the cities searching for a better life. There was a boom in the medieval economy as industries changed and farming tecniques advanced. Since food became plentiful, surplus crops from one region were traded for surplus crops from another, which was the first form of capitalism to develop.

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.

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer