The table lists the first four post–Cold War presidents. Do some research online to find information on the major domestic policies or actions of each president, and list those policies in the space provided. Be sure to include important legislation or other major actions that defined each presidency.

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.