The answer is primitive, since medical practices were not nearly as advanced as they are today.
Answer:
The development of a written language
Explanation:
The Maya civilization also developed an accurate calendar to understand time, its cycles, and seasons.
County treasurer is my best guess .-.
<span>A factor hindering the German invasion of Russia was Russia's incredibly large territory and brutally cold winters, since this made it nearly impossible for the Germans to maintain forces inland. </span>
