What was the main idea of the Republican Party?

The main idea of the Republican Party, founded in the 1850s, was to oppose the expansion of slavery into new territories and states. It aimed to promote free labor, individual rights, and economic opportunity, appealing to a coalition of former Whigs, Free Soilers, and anti-slavery Democrats. Over time, the party evolved to encompass a broader range of conservative values, advocating for limited government, lower taxes, and a strong national defense. Today, it continues to focus on issues like economic growth, personal freedom, and traditional social values.