President George Washington responded to criticism when he said, “The establishment of our new Government seemed to be the last great experiment for promoting human happiness.” Why would America and its government have been called “the last great experiment”?

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.