How did a small number of spanish conquistadors conquer huge native american empires

What triumphs did the late 19th century witness in the realms of industrial growth, urbanization, and technological innovation? what challenges did these developments pose for urban dwellers, workers, and recent immigrants? how did city officials and everyday citizens respond to these challenges?

Why was hawaii so important to the united states & why did japan bomb pearl harbor?

What do u think caused the size of the roman empire to change