This is a very complicated question with many different answers. There is no one place in America that has the best soil for EVERY kind of agriculture. If you are asking a question like "What state has the overall best soil for growing a large variety of agriculture" than the answer would most likely lie in the midwest, particularly Wisconsin, Minnesota, and Iowa according to the 2007 studies at the University of Stevens Point's Natural Resource College (Ranked among the top 2-3 each year, nationally)
the prairies
yes, the pampas soil is largely made up of fine sand, clay, and silt; almost wholly free from pebbles and rocks. This makes us great for agriculture since it is so fertile.
WWII was fought on U.S. soil (Hawaii). Although, technically Hawaii was not yet a state. Therefore, the American Civil War of 1861 was the last war on U.S. soil.
It helps to produce fertile soil & an incubator for wheat, cotton, rice, sugarcane, tobacco, citrus fruits, pecans, & nuts.
soil is very important for us because it gives us soil to grow plants which helps us to breath by giving us oxygen
The prairies (as in the US Midwest and Great Plains) are called the breadbasket of the world. This is because they are the biome most rich in soil nutrients, and with irrigation it is widely used for agriculture.
California
The state soil of the US Virgin Islands is Victory.
California, specifically the southern half of the state.
Enroll in a 4-year university with an agricultural program (e.g. Michigan State University, Washington State University, and nearly every university in states of the Great Plains), get a B.S. in plant and soil science or agriculture (or a similar field).
Black forest soil found in central Illinois.
all of the above: the integrity of natural systems agriculture which replenishes the soil an energy efficient economy
Conservation of natural resources
Livestock, fruits and vegetables are all US Agriculture
yes, the pampas soil is largely made up of fine sand, clay, and silt; almost wholly free from pebbles and rocks. This makes us great for agriculture since it is so fertile.
Fertile soil, most of the US has good rainfall, and the right temperatures for growing things. Incidentally, we also have the transportation network to move agricultural products to market.
Hawie
Records on the amount of unused or fallow farmland are kept by the United States Department of Agriculture, commonly called the USDA. Each state also has a department of agriculture that maintains records for that state.