What is one main characteristic of secondary sources intended for academic and students

Which document did the second continental congress send king george iii to refaffirm colonist allegiance to him but not to parliament

How were slavery and indentured labor in american colonies similar

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.