One of the first u. s. recipes for which food was written down by thomas jefferson?

Vanilla Ice cream recipe.

Explanation:

Thomas Jefferson has himself wrote the recipe of the Vanilla ice cream which is documented in the Library of the Congress at Washington D.C. Thomas Jefferson who is known as one of the founding fathers of America, author of the Declaration of Independence and the third president of the United States of America is well for his interest in food. The time he spends in France as a minster, made him more to explore the food like french fries, wines, champagne, pasta, cheese macaroni, etc.

a. factors that are used to make goods and services

demand is the need and oportunity to buy a given good or service.