Which of the following could be used to characterize “calles' law”?
a. anti-catholic
b. pro-socialist
c. pro-land reform
d. anti-communist

A) Anti-Catholic could be used to characterize "Calles' Law" of the following options mentioned above. Calles Law was a statute enacted by the then President of Mexico, whose last name was Calles, where he re-enforced Article 130, which stated that church and state should be separate, but this largely entailed prohibiting priests and ministers from having certain inherently human rights.

'cause it was the 1st meeting of it's kind... the 1st meeting of the north american continent