Complex sentence: From a modest network of university departments, ENEN has grown to include 50 universities, research centers, companies and other institutions in the EU; its membership has extended beyond the EU to Japan, Russia and Ukraine.
Split into simpler sentences: From a modest network of university departments, ENEN has grown to include 50 universities, research centers, companies and other institutions in the EU. Its membership has extended beyond the EU to Japan, Russia and Ukraine.