The major platform of the Republican Party in the 1850s was an antislavery platform. Antislavery leaders opposed the extension of slavery into even more territories. Their opposition of slavery ended up helping them to join forces.
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Both cultures faced anti capitalist views while over throwing the monarchy of Britain and of Frances king
they both wanted democracy and sought for change for the freedom of people, free market which created the mix economy agenda
When a dynasty has the mandate, they were in control. if something bad happens like a flood, the dynasty loses mandate and a new dynasty takes its place.