original: This era coincided with the Medieval Warm Period (800 1300) and stopped with the start of the Little Ice Age (about 1250 1850).
simplifications: This era happened at the same time as the Medieval Warm Period and stopped with the start of the Little Ice Age. The time ran parallel with the Medieval Warm Period and ended and the start of the Little Ice Age. This era conflicted with the Medieval Warm Period (800-1300). It stopped at the beginning of the Little Ice Age (about 1250-1850). This era existed alongside the Medieval Warm Period (800 1300). It stopped with the start of the Little Ice Age (about 1250 1850). This era went on alongside the Medieval Warm Period and ended as the Little Ice Age began. This era took place at the same time as the Medieval Warm Period and stopped at the start of the Little Ice Age. This era coincided with the Medieval Warm Period (800-1300) and ended when the Little Ice Age (about 1250 1850) began. This era took place at the same time as the Medieval Warm Period. The era stopped with the start of the Little Ice Age. This happened at the same time with the Medieval Warm Period (800-1300) and ended at the Little Ice Age (1250-1850). This era coincided with the Medieval Warm Period (800,1300) and ended with the beginning of the Little Ice Age (about 1250,1850).