They haven't been vaccinated against diseases that are common in Europe or their bodies aren't adapted to European lifestyles
Answer:
Manufactoring.
Explanation:
This was the time of the industrial revolution. The South was known for its strong military, its railroads, agriculture, and slavery. The North was known for its transportation and manufactoring, but the growth of the economy was because of the factories, aka the manufactoring.
Answer: The Senate.
Explanation: To balance the role of the House in breaking presidential ties, the Twelfth Amendment requires the Senate to handle that Job for tied vice-presidential contests. The Senate must choose between the two top electoral vote recipients, with at least two-thirds of the Senate's members voting.
More modernized weaponry, and the fact that the Spanish had spread small pox throughout the two villages.