What was the political significance of Kublai Khan’s conquest of China? Kublai Khan united with the Sung dynasty to unify China.
Kublai Khan defeated the Mongol ruler of China.
Kublai Khan defeated the Tang dynasty of China.
Kublai Khan unified China under the Yuan dynasty.

D

Explanation:Kublai Khan unified China under the Yuan dynasty.

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.

-an amendment is proposed.

-two-thirds of congress must approve.

-thee-quarters of states must approve.

-the proposed amendment becomes law.

hope this