In Europe, in the Industrial Revolution, when they dumped foreign corn and produce onto countries like Britain, and put the farmers under (and especially the small farmers), to move them all into the cities, to get their labor needed for manning the factories. The height in each generation of the people began to diminish.
Kwa Ulaya katika mapinduzi ya viwanda, walipotupa mahindi na zingine kwa mataifa kama Uingereza na wakaweka wakulima chini(sana sana wadogo) ili wapelekwe kwa viji alafu wapate wafanyikazi wa viwanda.