I need to have one to two keys words followed by a brief explanation for all four reasons.
an example: Industry: the North had greater industrial capacity that better sullied Union troops.
I would suggest 4 major reasons are:
1. Commercial/Colonial competition: the European powers of that time were the Spanish, French, Dutch, Portugues and English. All of these countries at various points from the 1500s-1800s controlled large commericial empires and were major sea powers.
Columbus was looking for a better route to the Indies. Most explorers were sponsored by Monarchs who had commercial interests and objectives.
2. Christianity. The Spanish in particular were engaged in spreading Christianity. It was a ...