How did the concepts of expansionism and capitalism influence American culture and identity?

Hold on! How did the concepts of expansionism and capitalism influence American culture and identity? -Carly K.

What is Expansionism?

Wait, well i haven't gone over Expansionism in my class yet, would you be able to explain it to me? -Mae D.

What is Capitalism?

Hey guys, I am learning about American History in Social Studies and we're talking about capitalism. Does anyone have any idea what it's all about?
-Georgia S.