Are there different rules for punctuation in different countries, or do all countries use British or American English rules? Example: commas and periods within, not outside, quotation marks
Hi, and welcome to Using English.
The commas and periods always go inside in US. It's not the same rule in the UK.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.