I think it is not led to spirit it is led to split.
The issue which led to split in the democratic party in the late 1850s is slavery.
Democratic Party was founded by James Madison and Thomas Jefferson in the year 1790s and it was a counter to Federalist Party and helped in promoting states’ rights. Democratic Party split and formed democratic which was with Andrew Jackson and the other part is Whig parties and this was caused by Monroe’s successor together with the dissolving of Federalist Party. Slavery issue also led to another split.
Democratic Party was well known in promoting social liberalism which resulted in health regulation in the wake of public outrage and better working conditions
The goal was to stop the spread of Communism.
(Look into Domino Theory.)
Some liked the new people, some did not. Some Natives saw this as an opportunity to trade. Some battled with the conquistadors. They were confused because they had not seen someone with the skin color of the conquistadors. The conquistadors also brought along diseases with them which killed many, and made much more ill.