What were the purposes of the earthworks built by cultures of eastern north america? select all that apply. a. as burial mounds b. as temple platforms c. as astronomical observatories d. as defensive structures e. as fields for athletic competition

How did industrialization change life in the united states?

Why did jefferson make the louisiana purchase?

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.