Google market is a little suck since what you see is related your country. For example, you couldn't buy any paid app if you are in China or you couldn't download Chrome browser if you are not in US.
it is easy for phone to hack it. Android use your sim card's operator number to distinguish where you from. There are many ways to modify operator number,like APP marketenabler. But for android pad which doesn't have SIM card, there is no application or article on the internet to tell you how to hack it. I try to turn off the location identify in setting and also try to use vpn to visit google android with US IP. But none of them work.
I guess there is not so many android pad in the world, otherwise hacker will do it.