What kind of targeting defines the audience according to age, gender, income, occupation and hhi?

In order to accurately determine absolute time, you need to know which of the following?

Which at first gave the south an edge in the civil war? a. a better-equipped army b. the invention of ironclad ships c. the drafting of slaves into the army

What is it called when countries build lots of weapons to store and them in case of a war?