All of the states of the USA are north of the equator.
So are all the states of Mexico.
<span>The right answer is B - American agriculture is best suited to the use of large plowing and harvesting equipment. American harvesting is so called because it was a system devised by the settlers in America that allowed them to provide large amount of food, making the most of the seemingly unlimited space that they now had access to.</span>
The order of the mainstream is not shown. Can you place it so that we can look at it.
Tillage is a threat to the soil because it ruins the protective topsoil. hope it helps :)