How did the river network shown on the map contribute to the advance of ideas in the Middle Ages? HURRY I HAVE 5 MINS PLS GUYS

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )

permafrost layer, it exists beneath a layer of soil, rock or sediment.