The interviews were conducted in 1937 and this is years after the emancipation of slavery so these people interviewed are very old and may not remember everything. It could make it more reliable because it gave the interviewee time to reflect on everything that happened to them. ... The interviewer in Document C was black.
The war started mainly because of four aspects Militarism Alliances Imperialism and Nationalism. This is because big armies become potential threats to other countries.
