What is the property rights issue mean?

Were african-americans allowed to serve in the military in wwi?

Why caused john quincy adams to write the monroe doctrine?

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.