Answer:
The prompt requires causation processing because it is asking how trade networks affect state formation. Causation describes causes and effects of historical development and the question is asking for the effect trade networks have on state formation in West Africa. The question limits what the writer can include about trans-Saharan trade networks to only state formations and limits the networks to only trade networks. It also limits the location of networks to trans-Saharan and limits state formation to West Africa. The writer can choose different trade networks and can pick one or many West African states.
Explanation: