Answer:
Camel caravans from North Africa carried bars of salt as well as cloth, tobacco, and metal tools across the Sahara to trading centers like Djenne and Timbuktu on the Niger River. Some items for which the salt was traded include gold, ivory, slaves, skins, kola nuts, pepper, and sugar.
Explanation:
none
C is the answer because he is commander in chief
Imperialism would probably be the most significant factor, but nationalism and militarism were also important.
The primary factor Seidman points to is the Industrial Revolution, what gave Britain an enormous advantage because they were able to produce goods at rapid rates.