In 486, the king of the defeated the last Roman commander.
A. Franks
B. Turks
C. Arabs

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

Which barrier to economic development is shown in the following examples? i. the high rate of hiv infection in underdeveloped nations ii. the use of children as soldiers in uganda’s army in the early 2000s iii. low literacy rates in underdeveloped nations with limited exposure to adequate education a. foreign debt b. political instability c. widespread disease d. low levels of social welfare

Which of the following best describes the circumstance under which countries block the importation of certain products into their country? a. importation blockade b. trade barrier c. trade inhibitor d. domestic protection act