Most islands within oceania have what type of climate?

Why was it difficult fpr unions to succeed in the 1800s

What are new social classes emerged due to advancement in agriculture ?

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.