There would have not been a Napoleon.
Had there not been a Napoleon...
France would not had been in debt.
Had France not been broke...
Thomas Jefferson would not have bought the Louisiana territory so cheep.
Had the United States not purchased Louisana...
There would be no territories for U. S. political powers to fight over.
Without this vast territory debate over who controlled it, there would not have been a Missouri compromise, or Nebraska Act, or Republican Party or Stephan A. Douglas.
Blame the French.