Between 1989 and 1999 Walt Disney Feature Animation (now Disney Animation Studios) released a series of wildly successful animated films. This time period is now known as The Disney Renaissance.
The years prior to the Disney Renaissance were filled with failures for The Walt Disney Company, and the Renaissance essentially put Disney back on the map as an entertainment company.
Due to the popularity of Disney/Pixar films Tangled in 2010 and Frozen in 2014, some believe that we have entered into a second Disney Renaissance or a "neo-renaissance" era. Let's hope to see more wonderful Disney/Pixar collaborations in the near future!