What happened to the total number of ships in the US Navy fleet in the twenty years between 1985 and 2005?

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.

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.