What other launch systems does Europe have? Or had, in history? Oh, Soviet Union/Russia doesn't count as Europe in this context, just ESA countries. The author probably should have been more specific.
> should have been more specific
Why? When someone says “America” without specifying anything it’s usually perfectly obvious they are talking about the US. Same applies to Europe and the EU(+associates) these days.
Regardless if that is true, the last Ariane 4 launched 20 years ago so it is certainly a rocket of a long gone past.
Europe should have built an Ariane 4 replacement, using Kerolox as the base fuel.