Which of the following choices contributed to problems between the U. S. and Mexico?

i agree with them.   i think technician a would be correct.

bbgftrtyc

payments were made after the 1940s.

in the 1980s, a commission held investigations and made recommendations.

the national congress's powers over the states were specific and definite: it had the sole power to negotiate treaties, declare war, and make peace. all powers not granted to congress were reserved for state governments. congress had no power to levy taxes, for example.