What USB device(s) connect my Sony laptop, Windows 7 to the internet without Wifi?

I have an unlimited data plan on my Sprint phone account, 4G, 3G, etc.

I have a 1.5 year old Sony Laptop, Windows7, extra ram, 4 USB ports.

I want to connect to the internet at reasonable speeds for voice, data, Skype or other service video phone calls. Data, voice, and Skype or similar service while away in

Going to: Northern Canada, Puerto Rico, France, UK, Australia, NZ and Japan in the next six months.

Is there any device that can give me access to all higher speed data/voice/video phone services (where available), even if I have to pay 3 or 4 phone data plans for a few months?

Oh, by the way, a couple of trips to US National Parks in AZ, UT, CO, WY......would like base camp check-ins with Skype or similar service there.........all without WiFi I have to pay for.

Any USB device that gets me all that? Or am I asking for 3 or more devices in 3 or more cell phone markets? Bottom line, is anything universal worldwide yet these days?