Which areas of the tropical north did they conquered by the mid 1500s

During the mid-1500, the Spanish conquered the northern part of South America (also known as the Tropical North). This area comprised what today is Colombia, Venezuela, Ecuador, Panama, a northern part of Brazil, and  part of the Guianas. The Spanish immediately established local governments, so they could control the surrounded lands and its people.

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.