Is this right? Please correct me if I am wrong

What is a firm that specializes in buying and selling stocks for individual investors called?

What was one major effect of industrialization on american society?

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.