They were folloing heards of food during the Ice Age, so the answer is C.
His primary message was to unite all Muslims.
When the rise of the vernacular language in medieval Europe happened, it was disliked by the aristocrats. However, the common people were very happy because the disadvantaged people who weren't educated in Latin could finally own and read a Bible. This increased the demand of the religious works.
Rail roads had a great impact on society because they were a faster way of transportation and they could go from state to state. while on the other hand steamboats were slow and could not go straight through the country.
