"The main way in which the United States developed politically during this time was that the Republican Party formed as an anti-slavery platform, while economically the nation flourished due to the create of railroads."
<h2>Abolition of slavery and railroads was built.</h2>
Explanation:
The Republican Party determined that slavery wasn't part of their core values. So, they created an anti-slavery party, which offered a lot in politics field to slavery abolition.
Also, during those years, railroads happened, which meant a huge advance for economy. Allow the country to industrialised.
