The <a href="https://en.wikipedia.org/wiki/International_Electrotechnical_Exhibition" id="mwwg" rel="mw:WikiLink" title="International Electrotechnical Exhibition">International Electrotechnical Exhibition</a> opened in <a href="https://en.wikipedia.org/wiki/Frankfurt" id="mwww" rel="mw:WikiLink" title="Frankfurt">Frankfurt</a>, Germany, featuring the world's first long-distance transmission of high-power, <a href="https://en.wikipedia.org/wiki/Three-phase_electric_power" id="mwxA" rel="mw:WikiLink" title="Three-phase electric power">three-phase electric current</a> (the most common form today).