Polish Coal Trunk-Line
...that the Polish Coal Trunk-Line, one of the most important rail connections in Poland, was built because post-First World War border changes made old rail lines obsolete?
...that the <b id="mwA-4"><a href="./Polish_Coal_Trunk-Line" id="mwA-8" rel="mw:WikiLink" title="Polish Coal Trunk-Line">Polish Coal Trunk-Line</a></b>, one of the most important <a class="mw-disambig" href="./Rail" id="mwA_A" rel="mw:WikiLink" title="Rail">rail</a> connections in <a href="./Poland" id="mwA_E" rel="mw:WikiLink" title="Poland">Poland</a>, was built because post-<a class="mw-redirect" href="./First_World_War" id="mwA_I" rel="mw:WikiLink" title="First World War">First World War</a> border changes made old rail lines obsolete?