Material and livestock are fundamental components of the agricultural sector in the United States. Material refers to the physical resources used in farming, such as seeds, fertilizers, and machinery. Livestock encompasses animals raised for food, fiber, and other products, including cattle, pigs, chickens, and sheep. These two elements are crucial for the production of agricultural goods, which contribute significantly to the U.S. economy and food supply.

The significance of material and livestock in the U.S. agriculture can be attributed to several factors. Firstly, the U.S. is the world's largest agricultural producer, with a diverse range of crops and livestock. According to the U.S. Department of Agriculture (USDA), in 2020, the U.S. agricultural sector contributed $466.5 billion to the national economy, accounting for about 1.2% of the country's GDP. This economic contribution is largely driven by the efficient use of materials and livestock.

Secondly, the U.S. is a major exporter of agricultural products, with livestock and material inputs playing a vital role in this trade. The USDA reports that in 2020, U.S. agricultural exports were valued at $141.9 billion, with livestock products being a significant part of this total. For instance, beef, pork, and poultry exports accounted for $15.2 billion, $5.5 billion, and $4.5 billion, respectively.

Moreover, the U.S. agricultural sector is characterized by high productivity, which is largely due to the advanced use of materials and livestock. The USDA's Economic Research Service (ERS) indicates that the U.S. has experienced a significant increase in agricultural productivity over the past century. This increase can be attributed to advancements in technology, improved farming practices, and the efficient use of materials and livestock.

For example, the use of genetically modified seeds and feed additives has led to increased livestock productivity. According to the ERS, the U.S. pork industry has seen a 50% increase in productivity since the 1970s, largely due to improvements in genetics and feed efficiency. Similarly, the use of precision agriculture technologies, such as GPS and drones, has enabled farmers to optimize the use of materials, resulting in higher crop yields and reduced environmental impact.

In conclusion, material and livestock are essential components of the U.S. agricultural sector, contributing significantly to the national economy and food supply. The efficient use of these resources has enabled the U.S. to become a global leader in agricultural production and trade. As the demand for food and agricultural products continues to grow, the importance of material and livestock in the U.S. agriculture will likely remain crucial.