The invasion theory assumes that this late Bronze Age outbreak of barbarian violence was a somewhat widespread phenomenon, perhaps one involving differing groups of peoples from the Balkans to the edge of China, and occurring at roughly close to the same time.
The theory is less popular today, if for no other reason than some of the invasions offered as evidence are now more doubted. Did the “Dorians” invade and conquer Greece as part of this calamity? Eighty years ago, a majority of historians would have likely thought so and would have blamed those invasions for plunging Greece into a dark age. Today, fewer historians believe those “invasions” ever happened. If multiple invasions didn’t happen—if, instead, warfare and raiding were more piecemeal and less widespread—it becomes tougher to blame them for bringing the entire system down. Some historians have even suggested they may be a historical myth.
While there are still big supporters of the idea that the peoples of the sea were of pivotal importance to the end of the Bronze Age, they are perhaps seen by most these days as more of an effect than a cause. The migrations, piracy, and even invasions may have been a response to something else …
Suspect #2: Famine/Climate Change/Drought
The Four Horsemen of the Apocalypse are commonly given the names Conquest (or Pestilence), War, Famine, and Death. In much of the modern world, the horsemen don’t seem as scary as they used to. War and conquest are still around, of course, but no World War III (yet). We are no longer able to relate to what our forebears went through with disease (pestilence).[26] And mass, society-wide famine is almost unheard of in most of the world. It seems like much of the darkness that humankind lived with from time immemorial has been banished from our future.
But it’s never wise to bet against any of the Four Horsemen long term. Their historical track record is horrifyingly good.
One of the things most of us take for granted is our access to food. There are malnourished and hungry individuals in every nation on earth, but times when food is scarce for whole societies is much, much rarer in most of the world than it’s ever been. Mass food insecurity was more the norm than the exception up until very recently, though. It’s only because of relatively recent changes that enough food can be produced to support our current population levels. Our modern delivery and logistics systems allow large amounts of food to be reliably shipped and to stock the shelves of even distant islands. When scenes of the ravages of modern famine appear on television charity ads, the reality displayed on camera is almost incomprehensible to most of us. But try feeding three hundred million people in the United States today with the farming technology of even two hundred years ago.
There are some incidents of mass fatality–level famine in modern advanced cities or states in the mid-twentieth century. The unusual sight of humans dying from starvation next to modern buildings and on modern streets clashes with the image in our minds of poor, war-torn, drought-stricken, underdeveloped societies on the edge of the globalized world. We are conditioned to think that way by recent history. It’s hard to picture London or Tokyo or New York with mass deaths in the street from starvation.
But that’s the human experience that we need to imagine when thinking about famine. The tales that modern observers and victims of famine tell are of societies that fall apart because there’s no food. Imagine if the region where you live were cut off from food supplies today. As Garry J. Shaw suggests, it might explain why you get sea peoples, migrations, invasions, or insurrections.
When enough people are driven by desperation, not even the greatest state can stop them; symbols of wealth and prestige mean nothing if enough people reject their meaning. In such times, some will rise up, burn, and rebuild on the ashes. Others will leave. And so, in this time of instability, disease, violence, famine, and drought, the assorted ‘Sea Peoples’ took the second option: they travelled eastwards, bringing their families and possessions along with them, leaving their homeland behind. To support themselves or when attempting to settle, sometimes they turned to violence, probably supported by mercenaries, creating their legend.
There’s good evidence for famine during the last few centuries of the Mediterranean Bronze Age in many places around the region. The Hittites, especially, seemed to be facing a dire food crisis over an extended period; a last desperate letter sent from the capital, before the destruction of the city, refers to starvation. In Egypt, cemetery finds show evidence that the population of this era often suffered malnourishment. And people from Libya seemed to always be threatened by hunger; they would raid or even migrate to Egypt periodically over many centuries for food.[27]
Lots of things can cause famine. Insects can eat or spoil food; rivers and water sources can dry up or change course, or complex irrigation systems can be destroyed; poor farming practices can deplete the soil. Usually, though, the weather itself is the greatest threat. Even in the modern age, the utter dependence of agriculture on the right range of favorable climatic conditions is humbling. No nation is immune. Arid weather in the American Midwest created the Dust Bowl of the 1930s, during the Great Depression, which in turn spawned a migration of people and sent forth ripples of historical change that are still felt today. Similar events must have happened innumerable times in humanity’s past.
Weather-related explanations for the end of the Bronze Age are extrapopular right now given the general spotlight on climate change, but historians for many decades have theorized that drought was what really unleashed the Four Horsemen. A prolonged drought, leading to severe famine, could certainly have been the spark that set into motion chain reactions that in retrospect explain things like piracy, migrations, and perhaps internal unrest.
As the historian Malcolm H. Wiener writes: “Warfare and migrations may be both the result and the cause of food crisis, and particularly where the carrying capacity of the land is already stretched to the utmost. The effects may be cumulative, with food shortages leading to overuse and degradation of available land; to rebellions by troops, populace, or captives; and/or to the loss of legitimacy of rulers believed to have lost divine favor.”
It’s hard to know how much localized famine was normal and to be periodically expected, and how much a particularly bad situation represented an unusual larger threat. Studies have shown evidence of a prolonged drought roughly around the relevant time in some of these areas.[28]
A counterargument by some experts, however, is that droughts are not uncommon in this climatic zone, because much of the eastern Mediterranean is somewhat arid to begin with. Why, suddenly, did a particularly dry period bring down a chain of ancient societies in a region where droughts weren’t so terribly rare? And why, if drought explains why peoples began to relocate, did those people sometimes leave known dry areas and migrate to ones that have been shown to be even more arid?[29]
Famine prompts a similar question: If famine wasn’t that rare, why did it topple the structure at the end of the Bronze Age rather than any of the other times it occurred? It certainly may have done so, but proving it is the task still facing historical investigators.
If something like drought or famine was the cause of the Bronze Age collapse, it didn’t wreak its changes by starving everyone to death. Famine would have been more of a spark that set off side effects. Yet it’s terribly difficult, especially thousands of years later, to tie the ripple effects back to whatever rocks were first thrown into the stream. How do you connect the dots, for example, between an attack by the sea peoples and evidence of a drought in their homeland? Having relatively accurate dates for when events occurred would be of great help solving such a puzzle. A drought, for example, a hundred years after the sea people invasions, couldn’t possibly have been its cause, but if it happened ten years before the great attacks chronicled by the pharaohs, then it might indeed have spurred a subsequent migration. But how close can science get to actual specific years when something occurred more than