What is pre-industrial culture?

How did the international community respond to south africa’s policies in the 1980s?

What was the result of the america's failure in vietnam

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.