These 7 maps explain US strategy
- Mar. 18, 2016, 10:53 AM
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- the US has sought to defend itself. It approaches each threat with a constant outward movement of attention and resources, and now it straddles the world.
This means the political, economic, and military postures of the US have tended to be offensive.
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The birth of a nation on the East Shore
Mauldin Economics
Consider the US at the time of its founding. The colonial United States existed on a relatively thin strip between the Appalachian Mountains and the Atlantic Ocean.
Its north-south communication was weak, as most rivers run from the mountains to the Atlantic. That meant that commerce and movement of troops to repel invasion were difficult.
Therefore, even after it declared independence, the United States was heavily dependent on maritime trade with Europe, and particularly England. At the time, England dominated the Atlantic Ocean, especially after the defeat of Napoleon and the destruction of the French navy.
The United States had lands west of the Appalachians, but they were minimally settled. Its heartland was a narrow eastern strip close to the Atlantic Ocean, and it was vulnerable to the British navy, which could carry out amphibious operations at any point along the coast.
Navies are expensive, and the United States couldn’t guarantee its national security until its economy had developed dramatically. That was difficult as long as the US was confined to the eastern seaboard. If it could not block British naval power, then it had to have strategic depth: The West.
Extending to the West
Mauldin Economics
The land west of the Appalachians was extraordinary—not just because of its rich soil, but also because of the Mississippi River system. Two great rivers, the Missouri and the Ohio, flow into the Mississippi.
They are joined by other smaller but very significant rivers like the Arkansas and Tennessee. They flow into the Mississippi, which then flows into the Gulf of Mexico.
The most extraordinary thing about this river complex is that it is navigable. That means that virtually any part of the land between the Rockies and Appalachians could not only produce agricultural products—and later minerals—but could also ship them inexpensively through this river system and eventually to Europe.
The United States was assigned ownership of the Northwest Territory (today the states of Ohio, Indiana, Illinois, Wisconsin, and part Minnesota) in the 1783 Treaty of Paris.
By 1800, it had already settled much of the territory and created new states and territories. But that land could not be fully exploited because the Mississippi River system was ultimately controlled by the Spanish and then by the French.
Neither significantly colonized their North American holdings, save for French Canada. The Spanish interest was precious metals, while the French wanted expensive furs. They hadn’t sent settlers into the area and so hadn’t cleared land and farmed it.
The English colonized the land and after independence, so did the United States. But their territories lacked one thing: New Orleans. And without controlling New Orleans—the Mississippi’s gateway to the ocean—farmers would not have access to world markets and would simply subsist on what they grew.
Louisiana for $3 million
Mauldin Economics
New Orleans was the key to North America. Sea-going vessels could not go very far up the Mississippi. The flat-bottom barges that brought the wealth of the Midwest down the Mississippi could not venture out to sea.
New Orleans developed at the point where ships and barges could each safely meet. The barges exchanged cargo with the ships, which then carried it to Europe.
Of course, to get to this point, the plain between the Rockies and Appalachians had to be settled and farmed. This westward expansion achieved two things. The first was an enormous increase in economic power. The second was strategic depth.
In 1803, France was engaged in the Napoleonic Wars for domination of Europe, and Napoleon was not very interested in the Louisiana Territory. For the Americans, and particularly for President Thomas Jefferson, it was an obsession.
The US bought the territory for $3 million dollars, which even in today’s dollar was an absurd amount—about $230 million. That price included the entire Mississippi River and New Orleans.
The defense of New Orleans became a central interest of the United States. During the War of 1812, when the British destroyed Washington, they also attacked New Orleans.
Future President Andrew Jackson defeated the British there and kept control of New Orleans and the Midwest. Jackson remained properly obsessed with New Orleans. It was the key to American power and prosperity. It was also still in danger.
The Mexican-American War
Mauldin Economics
The US-Mexican border was only about 200 miles away from New Orleans. In order to defend it, the Mexicans had to be pushed back. This was not a trivial fear.
The United States had a small standing army spread through a large territory. The Mexicans had a larger army, and if they massed a force, they might be able to take New Orleans and strangle the United States.
In the classic paradox of American strategy, the desire to defend New Orleans triggered an attack on Mexico in two parts.
First, Jackson asked Sam Houston to organize American settlers in the northeastern section of Mexico and foment an uprising designed to, at the very least, block Mexican access to the region… and at best, create an independent country, the Republic of Texas.
This was accomplished in 1836 when Sam Houston defeated Mexican forces under Santa Anna at the Battle of San Jacinto, near today’s Houston.
The second stage took place in 1846 when the United States, now more militarily capable, conducted a broad assault on Mexico—including amphibious operations that led to the capture of Mexico City.
The Mexican-American War achieved three things from the American point of view.
First, it crippled Mexican military capabilities for over a century. Second, it created a barrier between Mexico and the United States. After the war, there was a string of deserts and mountains south of the new border that made any possible counter-move by Mexico difficult. Finally, the US took control of all of northwestern Mexican territory, which included present-day California.
This made it possible to secure the Louisiana Territory against any potential threat from the west and anchor the United States on the Pacific. It created the framework for the contemporary continental United States.
The defeat of Mexico, the seizure of the northwest, and the lack of a realistic threat from Canada secured the United States in North America and created a new fear: naval threats in the Atlantic and Pacific.
The United States was secure from anything but naval action.