What Adapter do I need for London, Hollond and Norway?

I am going to Holland, Norway and London. I am taking this camera
Nikon Coolpix L840 16MP Digital Camera and was wondering what adapter would fit my wattage needs. How do I figure it out, I tried google, but it has no "concrete" facts. I would like a link to purchase it from. Thank you!

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Blurry background for Nikon CoolPix P520?

I was wondering how to take pictures with background blurry for this camera?

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