Locate the andean countries of south america on this map. what economic challenge is unique to bolivia among the andean
countries?

The Andean countries of South America in the geopolitical sense are Colombia, Ecuador, Bolivia, and Peru.

Explanation:

Bolivia is unique among the Andean countries because it is landlocked. It has no access to either the Atlantic or the Pacific ocean. Bolivia lost its coast to Chile during the War of the Pacific in 1879–1884 and became a landlocked country. This is still an ongoing dispute, at least in the eyes of Bolivia.  The dispute with Chile was taken to the International Court of Justice as recently as 2018. The Court decided in favor of the Chileans. They declared that Chile was not obligated to negotiate a Bolivian corridor of access to the ocean, although it had held discussions regarding this with Bolivian representatives.

of what agreement it does not show

the arab empire adopted the muslim religion as their main belief. arabs would influence the people from the territories they invaded towards islam (the muslim belief).

nevertheless, throughout the history of the arab empire, rulers brought intellectual individuals from other religions to their centers of learning. these other foreigners included jews, christians, greeks, persians, and indians.   these resulted in the adoption of important knowledge developed by these cultures by the arabic empire. for example, the works of aristotle were translated from greek to arab and indian scientists brought the numerical concept of "zero" to the arabs.

nowadays, 93% of the arab population is muslim, which at the same time is subdivided in sects including the sunni, zaini, alawi, shia. the remaining 7% is composed mainly of christians.