Which are the following statements is true regarding mexico city?

The Spanish people built the Mexico city as their capital city of New Spain.

Explanation:

Mexico city is the capital of Mexico. It is a highly and a densely populated city. Mexico city is the largest city of Mexico which is located in the western hemisphere and is a metro politician city.

At present, this city is the economic and the cultural hub of the country. But it was originally built by the Spanish people as their capital when Tenochtitlan was ruined.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

dude you should crop your image so only the question shows. but   can you explain it better