Ecommerce Gateway Is It Safe To Sell To Spain And Argentina From My Ecommerce Website? I Use A Shopping Cart And Authorize.net?

Is it safe to sell to Spain and Argentina from my ecommerce website? I use a shopping cart and authorize.net? - ecommerce gateway

I wonder whether it is safe to sell to Spain and Argentina from the e-commerce site based on us? I have a shopping cart and PCI compliance authorize.net payment gateway using SSL. Who's with experience in selling to this place?