“Why is it that you white people developed so much cargo and brought it to New Guinea, but we black people had little cargo of our own?"
It took Diamond a little while to answer, but the result was a book he wrote twenty five years later. His answer was that this was mostly an accident of geography.
Guns, Germs and Steel
The basic building blocks of civilisation are plants and animals that can be domesticated. As the largest of the continents, Eurasia has far more usable flora and fauna than any other continent. What's more, the East-West axis of Eurasia allowed these edible plants and tame animals to be propagated across all the major civilisations of the continent, west to Britain and east to China. European crops grow very well in southern Africa, but the harsh climate of sub-Saharan Africa lies in the way, meaning that cows and grain couldn't reach the bottom of the continent until Europeans learnt to sail the oceans. The Americas, meanwhile, were host to a decent number of useful species, from maize to potatoes, but they were each stuck in their particular climatic niche and couldn’t spread north or south.
Better farming led to higher population densities, but there were consequences to large numbers of people and animals living together, consequences that we are still living with today: disease. However, whilst the viruses and other pathogens from domesticated animals killed millions, the survivors passed their immunity on to their children. This meant that when the people from the Old World went to the New, Americans died in vast quantities of European diseases, but Europeans did not die of American bugs.
That is, in essence, the argument in Diamond’s book. But whilst it’s as good as far as it goes, there is a huge elephant in the room: China. China enjoyed all the benefits of the Eurasia farming inheritance. As the source of many of the world’s infectious diseases her population’s immunity was as good as anyone’s. So why was it Europe, and not China, that conquered the world? Diamond suggests the answer was political, that as China became a Universal State with no enemies of equal stature, she did not have the drive to improve that the warring European nations had. This is probably not right.
Instead, the next piece of the jigsaw is provided by Kenneth Pomeranz in his book The Great
Divergence. Comparing Europe and China pre-1800 he looks at all the reasons that are given for subsequent European domination, such as political and financial institutions, culture and economics, and so on, and finds almost all of them all wanting.

The Great Divergence
However, even with the spoils of an entire continent to be ruthlessly exploited, as well as the first factories,
Europe, as a whole, was not richer than China in 1800. Parts of Europe, like England, were far wealthier than the Chinese average, it is true, but equally parts of China, like the Yangtze Delta, were richer than the European average. The West only starts to accelerate away from the East in the nineteenth century when it begins to use significant amounts of coal. Now this is a complicated issue, because China has vast amounts of coal too. So why was the Industrial Revolution powered by anthracite from Wales, not Inner Mongolia? Pomeranz puts this too down to geography as well.

More significantly though, as steam engines were used more, they improved and became more efficient. Engineers like Watt became justifiably famous, but really this wasn’t the work a few geniuses, but a gradual improvement based on experience. With usable steam engines came railways, steam ships and all the paraphernalia of the industrial revolution. European heavy metal blew the Asian economy out of the water, in some cases literally.
Sources
Guns, Germs, and Steel was first published by W. W. Norton in March 1997 by Jared Diamond
The Great Divergence: China, Europe, and the Making of the Modern World Economy (2000) by Kenneth Pomeranz