For a large part of history human height has been limited by nutrition. This is why the United States was the tallest country in the world at the beginning of t

For a large part of history human height has been limited by nutrition. This is why the United States was the tallest country in the world at the beginning of the 20th century. Once everyone is everyone is fed the genetic differences become apparent. There are plenty examples of this. For instance, the Normans who invaded England were nearly six feet tall. However, by the mid-17th century the average man in Europe was something like 5'3-5'6. My great-grandfather was 5'3, and my great-grandmother was 4'11. They grew up during a famine in Hungary. My grandmother was 5'8, my dad was 5'11", and I'm 6'3". Of course my mom is half dutch, and her mom was 100% dutch and was 6'1", which is huge considering she was born in 1913. So I definitely get some of my height from that side of my family.