Answer: The 3 one
Explanation: I did this in civics. Hope this helped :)
Production of more food--the system allowed for more food to be produced which fed the workers in an industrial economy.
The 'four-field system' rotates crops between the 4 fields no longer needing to keep one empty because one of the crops would replenish the field with nutrients while the others take nutrients away from the fields. <span />
China was influenced by foreigners politically, socially, and economically during the Ming Dynasty. Missionaries come into China bringing both Christianity and technology. China struggled foreigners influence by kicking out the Mongols. Also, China began to detach itself and limited the foreigners’ trading posts.