Sumulat ng 5 naiambag ng mga amerikano sa ating edukasyion noon at ngayon pls asap dont answer if you dont know ok pls

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.