Reducing or removing alliances or embassies is the definition of the sanction of

Diplomacy.

Diplomatic sanctions are issued by countries or by the United Nations. These sanctions trigger the reduction or removal of diplomatic ties, such as embassies and consulates. The severance of diplomatic relations is one of the measures contained in Article 41 of the UN Charter, and have historically been one of the most frequently used sanctions.

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.

hey i did something like that before, what is the quesiton?