Flour is the primary ingredient of any bread recipe. It is the bread that we see. Flour contains gluten, a protein that provides for the elasticity, and the basic structure of bread. As the mixture is heated, the starch in bread sets, and adds to the structure.
If you are a U.S. permanent or conditional resident -- that is, someone with a green card -- the basic rule is that you cannot apply for U.S. citizenship (or apply to naturalize) until you have lived in the United States as a lawful permanent resident for at least five years.
Lawful Permanent residents (Green Card holders) whose Green Card has been valid during the 5 years prior can file for US citizenship. You can follow through the US immigration process to attain citizenship. If you are married to a US citizen, you may apply for US citizenship after 3 years with a valid Green Card.