Question

Many Americans migrating from large cities in the East were looking for:

Answer 1

Americans migrating from large cities in the East were looking for a chance to own a land. After the English settlers arrived to the East part of the United States, the next generations had the idea of colonizing the regions located on the West part of the country due to a westward orientation. They wanted to spread their culture and it was easy to take everything and move to another zone, following the belief that God wanted to pack the whole nation.  

Answer 2

A. land

many Americans at the time were tired and irritated at the fact that they could not own a lot of land so they migrated west to the open fields