How did the development of the railways lead to the growth of cities in the west?

What was different about religious practices in pennsylvania and massachusetts

Which of these is the modern day result of spain colonization of the americans?

Can someone answer these question about vasco de gama for me: when? (when did he started his travel)from where & to where? (from where he was and then where he went to)motives? (what was his motives for traveling)accomplishments & discoveries? i will give you 15 star for answering all of these, you so much.