The neutrality act of 1939 allowed for a cash and carry clause. What was the intention of this clause

An educated member of the government

Why did the rosenburg case attract nationwide attention and controversy

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.