as compared with hunter-gatherers. During the Bronze Age, height varied significantly by region. The people of the Indus Valley Civilization were among the tallest in the world, with an average height of 175.8 cm (5’9.5) for males, and 166.1 cm (5’5) females. The people of Ancient Egypt stood around 167.9 cm (5’6) for males and 157.5 cm (5’2) for females. The Ancient Greeks stood around 166.8 cm (5’5.5) for males and 154.5 cm (5’1) for females. The Romans were slightly taller, with an average height of 169.2 cm (5’6.5) for males and 158 cm (5’2) for females. In the 150 years since the mid-nineteenth century, the average human height in industrialised countries has increased by up to . However, these increases appear to have largely levelled off. Before the mid-nineteenth century, there were cycles in height, with periods of increase and decrease; however, apart from the decline associated with the transition to agriculture, examinations of skeletons show no significant differences in height from the neolithic revolution through the early-1800s. In general, there were no significant differences in regional height levels throughout the nineteenth century. The only exceptions of this rather uniform height distribution were people in the Anglo-Saxon settlement regions who were taller than the average and people from Southeast Asia with below-average heights. However, at the end of the nineteenth century and in the middle of the first globalization period, heights between rich and poor countries began to diverge. These differences did not disappear in the deglobalization period of the two World wars. Baten and Blum (2014) find that in the nineteenth century, important determinants of height were the local availability of cattle, meat and milk as well as the local disease environment. In the late twentieth century, however, technologies and trade became more important, decreasing the impact of local availability of agricultural products. In the eighteenth and nineteenth centuries, people of European descent in North America were far taller than those in Europe and were the tallest in the world. The original indigenous population of Plains Native Americans was also among the tallest populations of the world at the time. Some studies also suggest that there existed the correlation between the height and the real wage, moreover, the correlation was higher among the less developed countries. The difference in height between children from different social classes was already observed by age two. In the late nineteenth century, the