Likely because they were hardy, and had a fair amount of experience with agriculture.
If your talking the 13 American Colonies.
Nationality: English, French, African
Work: Sailors, Traders, Gentry
Religious: Protestants, Anglicans, some Jews
(it would be useful if you could be more specific)
This isn't entirely true; spartan women had much more rights compared to women from other city states in Greece. they gave birth therefore a value to society.
I agree because only the fittest people of society will thrive in life and succeed.
It is a metaphor, meaning you are spectuacular. (from usa at least)