North America 1838
Fragmentation of Central America
A united Central America had broken away from Mexico in 1823, but remained unstable. In 1837, revolution erupted in Guatemala ...
North America 1845
Annexation of Texas
An even bigger flashpoint than Oregon was Texas, which wanted to join the US despite Mexican warnings that doing so ...
North America 1850
Compromise of 1850
With its population booming, California wanted to join the Union as a free state - naturally antagonizing the slave states. After ...
North America 1852
Opening up the West
The surge in migrants heading west put increasing pressure on the Oregon Trail. To secure the Trail, the US government ...
North America 1855
In 1854 the Kansas-Nebraska Act created the new territories of Kansas and Nebraska, opening them up for settlement and granting ...
North America 1857
For many US citizens, the Mexican-American War had demonstrated that conquering Latin America was both easy and the natural destiny ...
North America 1860
Secession of South Carolina
By 1860, the rift between the slave states of the southern United States and the free states of the north ...
North America 1861
Fight for Kentucky
When the Civil War broke out, Kentucky had declared neutrality. This situation lasted for over three months, until a Confederate ...
North America 1895
Nicaragua and Venezuela Crises
In 1894, Nicaragua annexed the Mosquito Reserve, violating a previous treaty with Great Britain. In response, the British occupied Corinto ...
North America 1898
By 1898, the long-running Cuban war for independence was aggravating US-Spanish relations. In February, the USS Maine sunk in an ...
North America 1911
Mexico had been stable for four decades, most of that time under the presidency of Porfirio Diaz. But by 1910 ...
North America 1914
Political instability in the Caribbean and Central America continued into the 1910s, prompting further US military interventions as it sought ...
South America 1918
South America in the Great War
When World War I broke out in Europe, the German East Asia Squadron attempted to reach the Atlantic via the ...
North America 1929
Wall Street Crash
Further measures to ensure world peace were made at the US and French sponsored Kellogg-Briand Pact in 1928. In the ...
South America 1930
Already unstable, South America was hit hard by the Great Depression, with the global demand for the raw materials that ...
South America 1933
Bolivia and Paraguay were both left land-locked by the 19th century's wars in South America. Having lost substantial territory ...
North America 1934
The Great Depression hit the United States hard, with a nearly 45% drop in industrial production and widespread unemployment peaking ...
South America 1942
Brazil enters World War II
On 7 December 1941, Japan bombed Pearl Harbor, bringing the United States into World War II. Brazil almost immediately began ...
North America 1944
America in World War II
Following the Japanese attack on Pearl Harbor, Germany declared war on the United States, bringing its U-boat campaign to the ...
South America 1948
Following the end of World War II, suspicion and hostility grew between the United States and the Soviet Union. In ...