Nahuatl is the language spoken by the Nahua ethnic group that is found today in Mexico, but with deep historical roots. You might know one Nahua group: the, more accurately called the Mexica. The Mexica were one of many Mesoamerican cultural groups that flourished in Mexico prior to the arrival of Europeans in the sixteenth century.

The Aztec

Explanation:

The Aztec were a thriving Pre-Columbian civilization located in Mexico. The language the spoke is known as Nahuatl, and is still spoken today by a small number of people. Nahuatl is a distinct language from that spoken by the Maya, and Olmec who came before the Aztecs. The Aztec were arguably the most important Nahua group due the size and influence of their empire.  Although the term Aztec is more common in English speaking countries, Mexica is sometimes used to refer to the group.

the correct answer is:   "   3.6 % " .

          →   the unemployment rate is:   " 3.6 % " .

explanation:

to calculate the "unemployment rate" :

the "unemployment rate"   =

  [# of people unemployed] /   [working age population]   * 100 %   ;

                =   [9 million] / [250 million]     *   100 % ;

    →     note:   the units of "million" cancel out;

                    since:   " {million} / {million} = 1 " ;

                =   (9 / 250)   * 100 %   ;

                = 0.036 * 100 % ;

                =   3.6 %

answer:   the unemployment rate is:   " 3.6 % " .