@Yolomax
You say "use your brain", but do you realize what the Spanish were doing between 1492 (when columbus "discovered" the americas (predominantly the Caribbean) on behalf of the spanish trade groups) and 1580?
They literally wiped out 80% of the indigenous populations of everywhere they settled at. A large part is due to spread of disease, but another large part is due to aggressive invasion tactics, which included burning entire cities to the ground (and that includes their crops in order to starve them into surrendering).
Do you really think they'd have the resources to do such a thing as regrowing and harvesting cacao and sending it back to europe during that period, especially when they likely didn't even know what it was? (Plus, they went around killing/enslaving just about everyone that would know about cacao too)
Due to language barriers and the mass genocide/enslavement by the spanish, we (humans) lost much of the knowledge related to cacao and had to practically learn about it from scratch again.
And yes, Columbus stumbled upon cacao seeds on his fourth journey (which led him along the central american coastline), but cacao didn't even take root at all in spain until the late 1500s (supposedly close to when this takes place). It only fully took root once they began the enslavement of the indigenous and forced them to start farming the cacao to be sent to spain and portugal as a medicine for stomach aches. That was until it was discovered that adding milk and sweeteners (sugar or honey) made it taste good as a candy. It only started spreading to the rest of europe around the early 1600s (though, by then, it was being spread as a sweet candy instead of a sour medicine).
P.S.: According to the story, they are supposedly in the Roman Empire still (even though the roman empire fell well before then).