In the early nineteenth century, America's western territories were still largely unexplored.
America's western territories were largely unexplored during the early 19th century.
America's western territories were mostly discovered by the 19th century.
boy eats oranges
There is a man completing a painting.
Young girls are putting on roller skates.
The street goes all the way the the planet Mars.
The Don has a long list of little men who want to be big chiefs.
A boy who is wearing clothes near some equipment.