The north; Blue; High income economies + High Human Development Index states + G8 + Eastern Europe
<div class="legend" style="direction:ltr;line-height:23px;"><div class="legend-content" style="display:inline-block;vertical-align:top;box-sizing:border-box;width:34px;height:23px;overflow:hidden;font-size:15px;border:thin solid #333;background: #5fadf2;color:#202122;text-align:center;" title="#5fadf2"> </div> Developed World</div><div class="legend" style="direction:ltr;line-height:23px;"><div class="legend-content" style="display:inline-block;vertical-align:top;box-sizing:border-box;width:34px;height:23px;overflow:hidden;font-size:15px;border:thin solid #333;background: #f25f5f;color:#202122;text-align:center;" title="#f25f5f"> </div> Developing World</div>
Kingj123
Own work based on: <a href="//commons.wikimedia.org/wiki/File:BlankMap-World6.svg" class="mw-redirect" title="File:BlankMap-World6.svg">BlankMap-World6.svg</a>