Read the section "modern economies are big and complex." which sentence from the section explains what kinds of services modern economies provide? group of answer choices developing countries do this if they don't have the technology to make them into finished products developed countries have modern economies. modern economies are more complex. this includes retail, banks, hotels, real estate, education, health care, computer services, recreation, media and communications. to measure the gni, first add up the total value of its goods and services in a country. then divide that by the number of people.

The Full section of the whole article about "Development" can be found on this link: https://www.nationalgeographic.org/encyclopedia/development/3rd-grade/

Accordng to the article in question, Development is the change and growth of an Economy based on traditional ways that's only about surviving to a more advanced Economy based on technology; thus Modern Economies are complex due they're not just about agriculture, its advanced technology allows them a bigger service sector, thereby the statement that best explains the services provided by modern economies is the 2nd One: "Modern economies are more complex. This includes retail, banks, hotels..."

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

warfare was the primary means of cultural transmission in both regions.