The exact size, of course, depends on the playing time (in minutes and seconds), on how good the original compresses and the compression quality. 1 Mb a minute is a good approximation, in practice. I wouldn't trust 2 Gb to hold 1000 average downloaded songs. Just go for 4.
The causes of the Vietnam War were derived from the symptoms, components and consequences of the Cold War. The causes of the Vietnam War revolve around the simple belief held by America that communism was threatening to expand all over south-east Asia.
Who Caused the End of the Cold War? The end of the Cold War was a greater historical transformation than 9/11, but controversy persists about its causes. An article by Steven Erlanger in Monday's New York Times quotes the neo-conservative commentator Robert Kagan as saying that the standard narrative is Reagan.. But the standard narrative is misleading.