Powdered Agricultural Gypsum For Ponds A Question About Population In Europe In The 10th Century?

A question about population in Europe in the 10th century? - powdered agricultural gypsum for ponds

Q = What has led to an initial increase of population in Europe in the 10th Century led and transformed Europe
Backwater superpower in the world?

A =
A) The agricultural revolution
B) The Industrial Revolution
C) the colonization of other continents and countries
D) the invention of gunpowder