Unit 5 ties Part 1: Learn: Party History. Use slides 3,5-8, and 12-21. This is the time of the Whig party, which was formed in opposition to President Jackson, who was a Democrat. The First Party System: 1791-1815. Era of the Federalists and Republicans This became known as the Era of the Divided Government. During this time, many conservative Democrats joined the Republican party, and many more liberal Republicans either joined the Democrat party, became independent, or dropped out of politics. The Second Party System: 1828-1855. Whigs and Democrats Activate Go to Setting During this party system, another party marand. the nnnulict narty which inne​