Answer: Brazil independence
Explanation:” September 7, 1822, Prince Dom Pedro declared Brazil's independence from Portugal, founding the Empire of Brazil, which led to a two-year war of independence. Formal recognition came with a treaty signed by both Brazil and Portugal in late 1825.”
The Inca empire was based in Peru. Note that the empire spread in more countries then just the seat of the empire, like Ecuador, Bolivia, Colombia, Chile and Argentina.
Seems very basic, the ocean is above the plate, the plate material is heavier than water (it being rock). That's pretty much all of it. The plates grind a little and new land pushes up at plate boundaries but this does not seem to be related. The heavier material is below and the lighter above, those being rock and water respectively.
