How do I pass a xml attribute to xslt parameter?

Yes, I'm sorry didn't notice that you wanted also sort by attributes. Note also that you have changed the syntax of xsl:param and it's not correct in that way. It's very important that you keep the single quotes inside the double ones.

Here is the final template.

The currently accepted answer has one flaw: Whenever there is an attribute of data with the same name as a child element of data, the sort will always be performed using as keys the values of the attribute. Also, it is too long.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.