Michael Mann and his team of data manglers like-minded scientists like to tell us the Medieval Warming Period was just a “regional” event rather than global, because if it was global, that destroys their narrative. This new study shows it also occurred in South America, and adds to the growing body of southern hemisphere locations. as we can see in this map below, note the red markers where it was warmer than normal. Sure seems global to me.
Interactive map source: https://www.google.com/maps/d/u/0/viewer?mid=1akI_yGSUlO_qEvrmrIYv9kHknq4&ll=18.92594518076072%2C-12.335967063733051&z=3