A directly stated consitutional requirement in the US constitution in Article 2 Section 3 is that the President must give to Congress recommendations regarding the State of the Union and recommend any actions that are considered essential and expedient.
The answer is A. Grasslands.
The cotton gin changed the textile industry by making cotton far easier to sort, greatly increasing the output of available cotton and therefore causing the price to drop. The cotton gin works by separating the cotton fluff that will be made into fabric from seeds and dirt. Previously, picking these seeds out of cotton took a great deal of time and energy, but the invention of the cotton gin in 1794 sped up the process, allowing farms to produce far more cotton and increasing the amount of cotton available for making clothing.
