It would be an "effective secondary source document" that best describes a chart developed 20 years after a historical event, since the information as had time to "settle"--although of course this doesn't automatically mean that the chart is "effective". hope this helps :)
Something that has to do with settlement
The Battle of Tondibi was the decisive confrontation in Morocco's 16th-century invasion of the Songhai Empire. Moroccan forces under Judar Pasha defeated the Songhai Askia Ishaq II, guaranteeing the Empire's downfall.
Answer:
The event that happened last was that France refused Germany’s request to remain neutral. On July 28, 1914, Autria- Hungary declares war against Serbia, with Germany’s support. On July 30, Russia mobilizes its army to support Serbia. On August 1, after giving it an ultimatum, Germany declares war against Russia and gives another ultimatum to France. Germany requests France to remain neutral in the Russian conflict. To guarantee its neutrality, France must deliver the Verdun and Toul fortresses. France refuses Germany's request alleging that it will act according to its own interests. Consequently, on August 3, 1914, Germany declares war against France.
Explanation:
brainliest pls
