Disagree that’s kinda effed up
The settlers of Roanoke just disappeared and it's still a mystery.
is there any options
Answer: He mistakenly assumed he was in the Indies.
Explanation: "Columbus referred to the resident peoples he encountered there as "Indians", reflecting his purported belief that he had reached the Indian Ocean." (source: Wikipedia)
Cavour and Bismarck used poitics, he knew he couldn't take down Austria on his own so he got help from the Napolion the third. Even though the French backed out he still got Northern Italy back.
When it fell most people lost trading routes and trading partners since Rome was a big city and everybody went there to trade