san antonio was founded in 1718. what was important about its location at that time A) it was located on land claimed by the French wich helped weaken the French hold on territory in texas. B) it was midway between the Spanish settlements on the rio grande and the missions in east texas wich made it easy for missions to get supplies. C) it was located on the rio grande and served as a stopping point for settlers traveling to the interior ,becoming known as the gateway to Spanish texas. D) it was located near french trading posts wich increased trade between French and spanish settlers.