Same goes for Spanish. Which country's flag should represent it? Most people probably don't even know the flag of Spain and readers in Latin America might be of

Same goes for Spanish. Which country's flag should represent it? Most people probably don't even know the flag of Spain and readers in Latin America might be offended. I think the fact is that languages simply don't have visual symbols for them. They are spoken or written, not "looked at". Languages are linear, not 2-dimensional. Euros and Dollars have their symbol because that's what is printed on the 2D surface of bills.