What influenced settlers' difficulties in agriculture on the Great Plains?

The challenges that settlers faced in agriculture on the Great Plains were significantly influenced by frequent droughts and pests. The Great Plains region is characterized by llimited rainfall, which can lead to prolonged periods of dryness. This lack of water is a key factor that impacts crop production, making it difficult to sustain agricultural practices in the area.

In addition to drought conditions, various pests can devastate crops, further complicating the settlers' ability to maintain successful farms. These environmental factors created a challenging landscape for agriculture, as the settlers often were not equipped to handle such harsh conditions.

The other options do not accurately depict the primary challenges faced by those in the Great Plains. Adequate rainfall and fertile soil would typically support agriculture, while an abundance of timber sounds appealing for construction but was not a defining characteristic of the Great Plains. Similarly, while low prices for crops can be an economic difficulty, they do not directly pertain to the physical environmental challenges that settlers commonly faced in cultivating their land.