Questions: Which of the following was NOT a new agricultural innovation that would allow for the population growth of the late Middle Ages in Europe? the three-field system the heavy wheeled plow the horse stirrup the McCormick reaper

The answer is the McCormick reaper.

The three-field system was a significant agricultural innovation during the late Middle Ages in Europe. It allowed for more efficient use of land by rotating crops and leaving one field fallow, which improved soil fertility and increased food production.

The heavy wheeled plow was another important innovation of the period. It was particularly useful in the heavy, clay-rich soils of Northern Europe, making it easier to cultivate land and thus increasing agricultural productivity.

While the horse stirrup was a crucial innovation for cavalry and warfare, it was not directly related to agricultural practices. However, it did indirectly support agricultural productivity by enhancing the effectiveness of mounted soldiers who could protect agricultural lands.

The McCormick reaper was invented in the 19th century, long after the late Middle Ages. It was a mechanical device used for harvesting crops, which significantly increased agricultural efficiency, but it was not a factor in the population growth of the late Middle Ages.