Achallenge that mexican citizens living in areas that were part of the mexican cession faced was that
a. they were separated from white settlers.
b. their families were forced into slavery.
c. they did not know how to farm.
d. their families lived in mexico and the us.

The correct answer is D) their families lived in Mexico and the U.S.

One of the challenges that Mexican citizens living in areas that were part of the Mexican cession faced was that their families lived in Mexico and the U.S.

Living in a territory that formerly belonged to one country and then it changed hands to another country, was a difficult situation Mexican citizens had to face after the cession of territories to the United States. They were used to live under one culture and tradition, very different than the ones in the United States. After the cession, families needed to adapt to new ways of living and new laws.  

what are local authorities doing to fix the problem

explanation:

it's a secular holiday. it is and was a custom developed to recognize the ending of a time and a wish for a good future. the kind of kiss you exchange, if you are single, is intended to predict what kind of year you will have in the coming year.

it is saying good bye to the last year with all its ups and downs, and hello to the new year, with all its hopes and dreams.