Why did WW1 became a global war? (please answer in a 5-7 sentence paragraph)

The fact that the First World War was a global war was itself the product of a global order, shaped by the European great powers and held together by an embryonic economic system. ... Decisions made in the interest of individual nations also had an effect on the widening of the war from a regional dispute.

Hope it helps .. pls mark brainliest

discovery of cape town-portuguese empire

development of africans language-dutch east india company

introduction of railway-british empire

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: