The period in europe when life was uncomplicated and quite hard was the: -eighteenth century -twentieth century -middle ages

It was early middle ages, such statemnet could describe life bewteen end of the crisis of 5th century and reign of charlemagne known as carlignian rebirth in 8th and 9th century. to which development of agriculture and so called 'medieval industrial revolution' or 'first industrial revolution' could happened in teh eve of high middle ages

Where are the following ?