Different sources are aimed at different audiences. sometimes a source can be directed at more than a single group of people. are usually aimed at the general population across the globe. some sources may have a very specific audience. can be specifically aimed at students or scholars with a background in literature.

what are local authorities doing to fix the problem

explanation:

abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.

according to worldatlas.com, the u.s. has an 86% literacy rate.