Which Altcoin is next to Bitcoin and is being accepted worldwide?
I think Ethereum is next to bitcoin, because there are many merchants also that they accepted Ethereum as mode of payment aside from bitcoin, So meaning it has established also a big community users in this kind of industry in the entire world.
Rather these are going to be many of them,of course I think it will be gradually,I do not know why but people show a fascination always,and it is very easy to notice,if not,people would only invest in one,two or maybe three options but obviously it's not like that,so that the more those are accepted by peoples perhaps it´s more possible for businesses to start accepting precisely because of the popularity of those.