Reconnaissance expeditions, 1524–1525 
 * Per Wikipedia:Inline citation, it is suggested that inline citations should be consolidated at the end of sentences and paragraphs, and not within. But of course, this is not a deal breaker, and is merely a suggestion. 
 * Reword as such: "Following this battle, Marín headed into the central highlands of Chiapas, and around Easter, he passed through the Tzotzil Maya town Zinacantan without opposition from the inhabitants." 
 * conquistadors should be written conquistadores for consistency's sake. 
 * Pedro de Alvarado is mentioned above in 1523, but now he gets another section. I would strongly advise reorganizing the article into "Prelude to conquest", then "Conquest of Soconusco and reconnaissance expeditions", then "Conquest of the Chiapas Highlands, 1527-." 
 * Otherwise, this section is well-written, its contents are cited within the text, the references are verifiable, and I have no other comments or suggestions for this section. 

 Conquest of the Chiapas Highlands, 1527- 
 * Is there and end date for this conquest? The section title shouldn't be left hanging like this. 
 * reducciones is mentioned above in the article, and should be de-linked here, and wiki-linked in its first mention above. 
 * Per Wikipedia:Manual of Style/Titles, the English name should be mentioned first followed by parentheses (Spanish: XXX).  
 * The image of Santiago Matamoros is released into the public domain and is therefore acceptable for use here. 
 * It soon became evident that the Dominicans needed to reestablish themselves in Ciudad Real..." It should also be reworded that following this reestablishment, the colonists were calmed. 
 * Otherwise, this section is well-written, its contents are cited within the text, the references are verifiable, and I have no other comments or suggestions for this section.