Why did Europe’s agricultural output increase in the eleventh century?

Summarize the basic structure of the feudal system in Europe.
What were some reasons that European towns started to grow in the eleventh century?
Why did Europe’s agricultural output increase in the eleventh century?
What were some lasting results of the eleventh-century popes’ attempts to reform the Church?
What did Pope Urban II call on Western Europe’s nobles to do in 1095 and why?
How did the thirteenth-century Capetian kings of France strengthen their authority?
Why did Frederick Barbarossa and Frederick II ultimately fail to establish control over Italy?
What was the Reconquista?
How did noble and peasant diets differ?
How were living conditions of the peasant class improved in the aftermath of the Black Death?
Why were Genoese merchants in the service of Iberian kings exploring the Atlantic and western Africa in the fourteenth and fifteenth centuries?
Why did Christopher Columbus think he could sail directly from Europe to Asia?
II. Watch the following documentary on the Black Death and write a detailed summary: (20 points)

Please do not re type the question on the document I just need the question number and answer