The correct answer is: "the end of American neutrality in World War II"
The Lend-Lease Act was a program enacted in the US in 1941 to provide support to Allied countries so that they could defeat the axis forces (nazi Germany, fascist Italy and the Japanese Empire) in WWII, but the US had not decided to directly participate in the conflict yet.
The program consisted on the distribution of food, oil, and all types of military materials and it remained functioning since 1941 until the end of the conflict in 1945.
The definition of ignorance is a lack of knowledge or information. The definition of propaganda is official government communications that are designed to influence people's opinions. The correlation between ignorance and the power of propaganda is as follows: The less a person knows or is informed about, the greater chance there is that propaganda will influence them. <span>Governments often do not want their citizens to know what they are doing so they proclaim a blackout on news and information. This increases a government's ability to use the power of propaganda to persuade the people to believe what it is doing is correct. </span>
The symbol of deindustrialization is called the Rust Belt.