City planners often build transportation systems to accommodate geographic characteristics.

explanation:

with the profits from the european sales, merchants purchased europe's manufactured  goods, including tools and weapons. then the merchants shipped those manufactured  goods, along with the  american  sugar and rum, to west africa where they were bartered for  slaves.

answer; archaeologists;

answer; ///attempts to change more than once behavior at the same time;

answer; opportunities to further the healthy development to deal with the crisis of the next stage;