The three Spanish influences that are still present in Mexico today are:
B. the main language that is spoken in Mexico
C. place names in Mexico: Lake Texcoco, Oaxaca, and Tlaxcala
D. holidays in Mexico: Christmas (Dec 25th), All Saint's Day (Nov 1st), and Easter (the Sunday after Passover)
These elements demonstrate the lasting impact of Spanish colonization on Mexican culture, language, and traditions.