Natives look scared
In the painting Natives are wearing traditional clothes like moccasins, and buffalo skins.
On the left, we can see dark clouds and a storm
On the left there are wild (sauvages) territories like the Rocky Mountains and the Great Plains
Natives were nomads, they lived in tepees in Great Plains in the west.
whereas settlers lived in cities and developed transportation.
while settlers are wearing western clothes like cowboy hats, boots and shirts.
Whereas on the right there are urbanized territories for example cities, a bridge and boats.
but on the right there is a bright and blue sky.
unlike settlers who look confident.