So, to find out what IS a cause of the war we need to know M.A.I.N. That means Militarism, alliances, imperialism, and nationalism. That would mean the choices that aren't caused are totalitarianism, defense, and industrialism.
because due to the expansion of the agricultural the African slave have had the chance to be free and due to the expansion agriculture from Brazil into Carribbean drove the expansion of the trade
