Talk about the three G's; Gold, Glory, and God.
Also, at the time, land was equal to power. The more land you had, the richer you were. This is a social and political reason, as well as economic.
Hope this helps you. Ask any questions if you need to!
The mobility of the colonist forced colonial governments to be a liberal because the colonist were always on the move and they wanted to please the colonist that were coming in and have an open mind. The first colleges found it in the American colonies were bite we're by England men OK British men so that is how that happened and the factors that made public education important and most of new England colonies is that they wanted people to know their stuff and be educated..
The pass at Thermopylae was thus opened to the Persian army, according to Herodotus, at the cost to the Persians of up to 20,000 fatalities.