Answer:
It shows people moving westward bringing everything with them. This shows that they started expanding the country westward. Then the fact that the bulls are running away from the horses shows that in order to take control, we tried to push out all the animal and people that lived in the land we wanted in the process. The huge angel trampling things shows that we didn't really care what we destroyed as long as we got what we wanted, and because we thought we were right
Step-by-step explanation: