Final answer:
Coastal region soils tend to be more fertile due to factors like gentle topography, nutrient-rich sediments from river deposits, moderate climates, and sometimes unique historical contributions to soil fertility.
Step-by-step explanation:
The soil near the coastal region is generally better for cultivation due to a combination of topographical factors, nutrient-rich sediments, and climate conditions that favor plant growth. The flat or gently sloping land in coastal areas promotes better water retention and less soil erosion compared to steep terrains. Furthermore, rivers carrying sediments from the interior deposit these in deltas, creating fertile soils that are ideal for agriculture. Coastal regions often benefit from moderate climates and adequate rainfall, which supports a longer growing season and allows for multiple crops to be harvested each year. Additionally, historical factors, such as organic matter from long-dead plankton, can contribute to soil fertility in specific coastal areas, exemplified by the rich soils found in certain parts of the American South.