
Given the following passage

"The major architectural undertakings were the buildings of abbeys and cathedrals. From about 900 CE onwards, the movements of both clerics and tradesmen carried architectural knowledge across Europe, resulting in the pan-European styles Romanesque and Gothic.",

answer the following question. Note that the answer is present within the text.

Question: How did people learn of the pan-European styles? 

movements of both clerics and tradesmen
