The keys to the success of the mongolian military in the 1200s included

a fleet of powerful ships.
a single of squad of soldiers.
organized troops on horseback.
rifles and other advanced weapons.

The correct answer is the 3rd option.

C) Organized troops on horseback

The keys to the success of the Mongolian military in the 1200s included organized troops on horseback. Option C is correct.

The Mongol Empire was present in history during the 13th and 14th centuries and was the largest contiguous land empire. It originated in Mongolia, and extended from Eastern Europe and parts of Central Europe to the Sea of Japan, stretching northwards into Siberia, eastwards and southwards into the Indian subcontinent, Indochina and the Iranian Plateau; and westwards as far as the Levant and the Carpathian Mountains.

what are local authorities doing to fix the problem

explanation:

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.