The majority of the east coast of the united states has this certain soil classification.
vertisols
entisols
alfisols
spodosols
ultisols

Ultisols

Explanation:

They are commonly known as red clay soils being acidic, these soil sare founding tropics, and subtropics. Lacking in calcium, magnesium, and potassium. they are produced due to weathering and are found 8% worldwide. They may be purplish red,  brownish pale yellowish-orange. Having a pH of more than 5. The red and yellow color results from the iron oxides. They consist of 45% mineral and 5% organic matter. To avoid the decay of matter adding manure to the fall is advisable with a significance of 2 to 3 thick layer as they are easily exhausted. Contain more calcium carbonate.

Answer volcanic outgassing;