Some push factors were the chance to get rich, Dry farming, owning land, escaping the nightmares of the south ( slaves ). There were also longhorns to sell. Some pull factors were relatives and spouses not wanting them to go.
Victory gardens, were vegetable, fruit, and herb gardens planted at private residences and public parks in the United States, United Kingdom, Canada, Australia and Germany during WWI and WWII. They were used to help prevent food shortages, to make sure there was food for everyone
A few of the significant changes is our spine, and also we used to have a tail.