Which statements accurately describe isaac newton's achievements

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.

it was douglas macarthur..

briefly explain support for the argument that the articles of confederation succeeded in guiding the us through its first decade

northwest ordinance: