What did president johnson risk violating the tenure of office act to the fire of his secretary of war

C:The secretary was a strong supporter of Radical Reconstruction, which President Johnson vehemently opposed.

Explanation:just took the test :)

i need answer choices

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.