Economists who study macroeconomics are concerned with all of the following except
a. the gross domestic product (gdp)
b, the business cycle
c, the purchases of single individual
d. assessing economic trends and practices of the aggregate

herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.

a.impressment of us soldiers

not sure but thinking i'ts cause the government was broke. not sure

a widespread disease that killed many people

the split of the christian church

invasion from arab muslims