Causes of War

Watercolor of a view of a river, with boats sailing along a river, with groups of people standing along the shoreline.
A somber crowd in Norfolk harbor watched the remains of seaman Robert MacDonald rowed to their final resting place. The attack by the H.M. LEOPARD on the U.S. CHESAPEAKE on June 22, 1807 resulted in the deaths of MacDonald and three other seamen.

This event created a major international crisis between the United States and Great Britain.©Richard Schlecht

In the early 1800s, the United States had three main reasons for declaring war on Britain, which led to the War of 1812:

  1. The U.S. wanted to expand its territory to the North and West, which would take away land from Indigenous peoples living there.

  2. There were serious economic problems because Britain was blocking American trade, as a consequence of the Napoleonic War in Europe. This made it hard for the young nation to grow. British troops were also in areas along the Great Lakes and were believed to be helping Native Americans attack U.S. settlers.

  3. The British Navy was stopping American ships and forcing American sailors to work on their ships, taking away their freedom. All these issues made many Americans want to go to war.


By June 1812, the anger about Britain’s actions had become strong enough that President James Madison, who was worried about his re-election, agreed to the War Hawks’ push to declare war. At the time, the American Navy was much smaller, with only about 17 ships compared to Britain’s fleet of over 500. The American Army was also smaller, being only about half the size of Britain’s and widely spread out.
Americans felt more confident because the British were also involved in the Napoleonic Wars in Europe from 1803 to 1815. When the United States declared war, British troops, supplies, and money had to be moved from fighting the French to protecting their interests in Canada. Britain didn’t want to go to war with America but saw the U.S. as an important market. Many people in New York and New England worried that the war would hurt their shipping businesses, so they didn’t support the war and even continued to trade with Britain, although not as much after the British blocked American ships.

In the summer of 1812, American troops tried to invade Canada, but their plan was poorly organized and they ended up losing and had to retreat. However, some American naval victories on the ocean helped boost the spirits of Americans and even helped President Madison get re-elected. In response, the British set up a blockade along the American coast south of New York to stop trade, which hurt the U.S. economy. This blockade lasted from early 1813 until the end of the war and was especially tough on people in the Chesapeake region, an important area for trade.

A Nation Divided

In 1812, the United States was still a young country, only about 25 years old. Many people remembered the Revolutionary War and what it took to gain independence. The nation was still changing. People were worried about having a strong central government and were thinking about issues like trade, slavery, and how to expand the country. Washington City, which was the capital back then, was just starting to grow. Many arguments about how to protect the nation took place, but there was not enough money or support for a strong national defense.

On June 18, 1812, after a very close vote in Congress about going to war, Americans found themselves in a new conflict. The country was divided on this issue. In Baltimore, a group of people who supported the war attacked the offices of a newspaper that was against the war, causing riots and leading to injuries and even deaths.

Learn more about the War of 1812 in the Chesapeake Bay region below.

 
 
  • War in the Chesapeake
    War in the Chesapeake

    By 1812, the Chesapeake Bay region played a pivotal role in international trade, maritime commerce, shipbuilding, and government.

  • Aftermath
    Aftermath

    How did the war end? Had it made any difference? What was the war’s impacts on the Chesapeake?

  • People
    People

    Learn more about the people of this region and life during the war.

  • Places
    Places

    Every region in the Chesapeake Bay was affected in some way by the War of 1812. Learn about the impact on local places in MD, VA, and DC.

  • Stories
    Stories

    Invasion! Riots! Quick-thinking heroes! Learn more about the fascinating stories related to the War of 1812 in the Chesapeake.

  • The Star-Spangled Banner
    The Star-Spangled Banner

    Learn the history behind the creation of the flag and song known as the "Star-Spangled Banner."

Last updated: November 26, 2024

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