What happened on “Black Monday”?

How did settlers decide where to live ?

Which event transfer power from the west to the east? a. the development of a unique code of law for the byzantine empire b. the shift of the roman empire’s capital from rome to constantinople c. the entry of christian priests and missionaries into constantinople d. constantine i’s commemoration as the first byzantine emperor reset next

What would be considered a secondary source about the assasination of abraham lincoln