Did you know that you could make money in Crypto through arbitrage? I believe arbitrage is a Business!
It's a actually a business but you know arbitrage trading is quite complex and it's not something one can just jump into without doing proper research on the market and besides the profit margins for arbitrage trading are often quite small and you'll need to trade in large quantities to make it worthwhile. It's profitable but the risk involved overwhelm the profit. Just stay off and think of something much better.
It would be a difficult thing to do because you're going to need someone to be in the other country to sell the bitcoin for you and that takes a lot of trust to do especially most of the people that do this have millions to start their business so it's not a waste of their time. I would say that it's a great avenue to make money but the expenses and the effort that you need to pull this off is going to be difficult and isn't this kind of thing been done before and the people that have done it got banned in the exchanges that they're doing their arbitrage trading?
No, I don't think you necessarily need someone in another country before you can do arbitrage trading because you can use two different exchanges/platforms that seem favorable to you. However, it's the most risky way to make profit in the cryptocurrency space in my opinion. It doesn't worth the stress and risk at all when you analyze the potential risk involved in it. Many scam sites are also out there disguising to offer arbitrage services looking for those who will fall victim.