[ansel12]

By comparison, the height of the average American man has risen a mere six cm over the same period.

A 150 years of mass immigration in America, with the last 50 years being non-white, so we are comparing apples to Mexico and the orient.

[GOPJ]

A 150 years of mass immigration in America, with the last 50 years being non-white, so we are comparing apples to Mexico and the orient.

Good point.