World War I was a global war centered in Europe from 1914 to 1918 that involved all the major world powers divided into two alliances: the Allies including the UK, France and Russia, and the Central Powers including Germany and Austria-Hungary. Over 70 million military personnel were mobilized during one of the largest wars in history. Carranza was elected president of Mexico from 1917 to 1920. His government faced economic, military, political and social crises as the country recovered from years of revolution and fighting. However, Carranza established a strong government based on the new Mexican constitution. General Alvaro Obregon supported Carranza during the Mexican Revolution and later served as his Minister of War. In

2. FIRST WORLD WAR
World War I (WWI) was a global war centred in Europe that began on 28 July
1914 and lasted until 11 November 1918. It was predominantly called the
World War or the Great War from its occurrence until the start of World War
II in 1939, and the First World War or World War I thereafter. It involved all
the world's great powers,[5] which were assembled in two opposing alliances:
the Allies (based on the Triple Entente of the United Kingdom, France and
Russia) and the Central Powers (originally the Triple Alliance of Germany,
Austria-Hungary and Italy; Italy did not enter into the war, as Austria–Hungary
had taken the offensive against the terms of the alliance).[6] These alliances
were both reorganised and expanded as more nations entered the war: Italy,
Japan and the United States joined the Allies, and the Ottoman Empire and
Bulgaria the Central Powers. Ultimately, more than 70 million military
personnel, including 60 million Europeans, were mobilised in one of the
largest wars in history

3. CARRANZAS GOVERMENT
in 1917-1920 carranza was elected the president of our country, carranzas
goverment suffer a economi, militar, political and social crisi this was
very difficult, the country was destroyed for many years of fight but
carranza achievo to have a strong goverment based on the constitution
The ambitious Carranza made himself one of the most important figures in
the Mexican Revolution because he truly believed that he knew what
was best for the country. He was a planner and organizer,and
succeeded through clever politicking where others relied on strength of
arms. His defenders point out that he brought some stability to the
country and provided a focus for the movement to remove Huerta, who
was a monster.

4. CARRANZA

5. ALVARO OBREGON
General Álvaro Obregón Salido (February 19, 1880 – July 17, 1928) was the
President of Mexico from 1920 to 1924. He supported Sonora's decision to
follow Venustiano Carranza as leader of a revolution against the Huerta
regime, and Carranza appointed Obregón commander of the revolutionary
forces in northwestern Mexico and in 1915 appointed him as his minister of
war. In 1920 Obregón launched a revolt against Carranza, in which Carranza
was assassinated; he won the subsequent election with overwhelming
support.

6. jessus guajardo decept zapata by telling himthat he will gave him weapons
and army and when zapata be distracted guajardo ambush him.
the presidencial period was finishing and carranza want to put on the
power his friend ignacio bonnillas but alvaro obregon that was looking
for the presidence disagrees at the end adolfo de la huerta was called
president but his goverment only long 7 months.
de la uerta convoqued the elccions of 1920-1920 in wich alvaro obregon
was elected