Calculating Death Rate

In one year, two armadillos are born into a population in South America. Six armadillos immigrate into the population, but one leaves to find an area with more food. If the overall population growth is five armadillos, how many armadillos died during the year?

Which factor contributed to the rise of african empires such as ghana and mali ? a. their creation and involvement in trade networks b. they focused only on agricultural production. c. they didn’t engage in warfare with other nations d. their geographic location protected them from attacks.