http://bpwfoundation.org/na-zywopolska-czechy-na-zywo/
http://bpwfoundation.org/en-directfrance-u21-croatia-u21-en-direct/
http://bpwfoundation.org/watchromania-u21-belgium-u21-live/
http://bpwfoundation.org/watchitaly-u21-england-u21-in-diretta/
I believe the answer would be eleven, because 2×11+5=27
Gold mines, families from the Eastern states traveled across the country for gold.
Answer:
stargazing
Explanation:
they were very advanced in astronomy
It helped increase the population of the US