The harp is the national instrument of which country?

The Paraguayan harp is the most popular, and is Paraguay's national instrument.
https://en.wikipedia.org/wiki/Harp

Paraguay
https://en.wikipedia.org/wiki/Paraguayan_harp

In modern times the triple-strung harp is the national instrument of Wales.

http://www.harpspectrum.org/glossary/glossary2.shtml

And just to confuse even more, the Irish are understandably proud of their national instrument, the harp - that haunting, beautiful-sounding instrument with a rich, centuries-old tradition. Not surprisingly then, you could have knocked Ireland over with a feather when it was recently shown that the Irish harp originated in Scotland.

home.earthlink.net/~minermusic/ofthefather.htm no longer exists

Wales was what I was looking for. However, being Irish, I must add that while the harp is our national symbol, the uileann pipes are our national instrument. They are a lot less harsh than the bagpipes.