What was a cause of range wars

Which of these were effects of mass production techniques used during 1920s

Historians have recently discovered a historical journal published in the early twentieth century. the journal contains facts based on original sources about the downfall of the early byzantium empire. historians consider this long-lost journal to be a breakthrough in their understanding of the byzantium empire. based on this information, the journal is a source.

Which of the following areas was not part of roman empire? a: syria c: bridges b: forums d: aqueducts h.e.l.p asap