There isn’t an event that historians consistently call the “second Mexican Revolution” , so the phrase is a bit confusing. Most likely, people mean one of two things:

  1. The main Mexican Revolution (1910–1920)
    • It began with Francisco I. Madero’s uprising against Porfirio Díaz in 1910.
 * Many quick summaries simply say “the Mexican Revolution (1910–1920)” and don’t number it.

 * In casual speech, someone might mistakenly call this the “second revolution,” thinking the first was the **War of Independence (1810–1821)**.
  1. Later revolutionary phase after Madero (1913–1917/1920)
    • Some writers split the conflict into phases:
      • Early phase: Madero vs. Díaz (around 1910–1911).
      • Later, more radical phase: Zapata, Villa, Carranza, Obregón, and the civil wars after Madero’s assassination in 1913 , continuing to about 1917–1920.
 * In that interpretation, people sometimes loosely talk about a “second revolution” referring to this post‑1913 civil war period.

Quick Scoop

  • No official “Second Mexican Revolution” date exists in standard history books.
  • If someone contrasts it with the first revolution (independence from Spain) , then the “second Mexican Revolution” is simply:
    • The Mexican Revolution of 1910–1920 , starting in 1910 and usually said to end by 1920.

Mini sections

1. If you mean “second” after Independence

  • First big upheaval: Mexican War of Independence , kicked off by the “Grito de Dolores” on 16 September 1810.
  • Second big upheaval: Mexican Revolution , starting with Madero’s revolt in 1910 , ending with consolidation of the new order around 1920.

So in that sense, your keyword “when was the second mexican revolution?” would point to:

It started in 1910 and is usually dated to 1910–1920.

2. If you mean an internal “second phase”

Some authors break the Mexican Revolution into phases instead of numbering whole “revolutions”:

  • Phase 1 (1910–1911): Madero’s uprising against Díaz and Díaz’s fall.
  • Phase 2 (1913–1920): After Madero’s overthrow and murder in 1913 , a broader social and political struggle continues among Villa, Zapata, Carranza, Obregón, and others until around 1920.

In casual talk this second phase can be mislabeled a “second revolution,” but historians still treat the whole thing as one revolution.

Tiny FAQ-style bullets

  • Is there an official “Second Mexican Revolution” in history?
    • No; standard references only list one Mexican Revolution, dated 1910–1920.
  • What’s the safest answer if someone online asks?
    • Say it refers to the Mexican Revolution (1910–1920) , beginning in 1910.
  • Why the confusion?
    • Because Mexico had multiple upheavals (Independence 1810–1821, Reforma, Revolution 1910–1920), and people sometimes number them informally.

TL;DR: When people say “second Mexican Revolution,” they almost always mean the Mexican Revolution that began in 1910 and is dated 1910–1920.

Information gathered from public forums or data available on the internet and portrayed here.