Abraham Lincoln became president in 1860 due to the fragmentation of the Democratic Party over slavery, leading to a Republican victory without any southern electoral votes.
Abraham Lincoln emerged as president from the divisive party politics of the 1850s due to the fragmentation of the Democratic Party over the issue of slavery, creating an opportunity for the Republican Party to win the presidency. This division allowed Lincoln to secure the nomination and ultimately win the election of 1860, despite not receiving any southern electoral votes.
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