What technological advancement helped to overcome the limitations of a horse-drawn plow in agriculture?

The use of tractors marked a significant technological advancement that greatly transformed agriculture by overcoming the limitations of horse-drawn plows. Tractors provided a more powerful and efficient means to plow fields, allowing for larger areas to be cultivated in a shorter amount of time compared to the traditional horse-drawn methods. They also offered greater versatility as they could be equipped with various attachments for different agricultural tasks, such as tilling, planting, and harvesting.

In contrast, while fertilizers can enhance soil fertility and improve crop yields, they do not directly address the physical limitations of the equipment used for tilling soil. Similarly, irrigation techniques are crucial for managing water supply in farming but do not replace the need for effective soil preparation tools like plows. The seed drill, an important invention for planting seeds effectively, also does not provide the same level of efficiency in soil preparation as tractors do. Thus, the introduction of tractors stands out as the primary advancement that transformed plowing and overall agricultural productivity.