This week, we sit down with historical biographer Sarah Gristwood to learn more about the women who ruled 16th century Europe. Visit Viral History at http://www.viral-history.com/ Subscribe to Viral History on YouTube at https://www.youtube.com/channel/UC1nt… Like Viral History on Facebook at http://www.facebook.com/viralhistory/ Follow Viral History on Twitter at http://www.twitter.com/Viral_History Follow Viral History on Instagram at http://www.instagram.com/viralhistory