Which sentence best describes how the process of westward expansion affected American political culture?
1: The need for labor led to the abolition of slavery and increased respect for personal liberty
2: The concept of expansion led to an accepting culture, and also inspired involvement in international politics
3: The culture of settlers led to a respect for self reliance, but also led to discrimination against Native Americans.
4: The addition of new states led to a respect for the states rights, but also led to a decrease in the power of the urban majority