music: 60's Chart Toppers: Name The Artist: It's Over?

Questions

who was the second u.s president?

who were david soul and paul michael glaser better known as?

after russia and kazakhstan, what is the third largest of the former soviet republics?

on the border between brazil and which other south american country would you find the itaipu dam?

what dam is said the be the largest hydroelectric station in the world?