hello,
i think the query_post thing can do something with the words “meta_key” and “meta_value”
but for the link you should use variables, like $meta_key
so you should turn your meta keys and values into variables
my english is een worse than yours !
This..
<?php bloginfo('url'); ?>/category/economic-and-cultural/?meta_key=country&orderby=meta_value&order=ASC
Is already a query string, it’s requesting a category…
Try
<?php bloginfo('url'); ?>/category/economic-and-cultural/&meta_key=country&orderby=meta_value&order=ASC
For testing it might be useful to check which query vars were picked up by WordPress..
Place this before your query, just to check which vars are showing as being set/declared/queried..
<pre><?php print_r( array_filter( $wp_query->query_vars ) ); ?></pre>