Back then government was possible when the people came and worked together. By having good leaders they could make stable groups called empires
Hope this helps might be a bit more then you wanted
Expansive. It means that there are a lot of children, and the population is spiking.
This reference came from a comedian named Will Rogers, he used it do describe President Herbert Hoovers stimulus efforts during the Great Depression.
<span>Harriet Tubman's primary role in the effort to abolish slavery was that he established the "Underground Railroad" (not an actual railroad), which helped slaves escape from the South to freedom. </span>