National IQs correlate with historic technology levels from 1000 BC. National IQs show positive manifold across IQ and achievement tests. National IQs correlate spatially, with latitude (r=.5), cold climate, and cranial capacity. Parasite load correlates with national IQs and cranial capacity. National IQs correlate with skin color. National IQs predict GDP, patents, Nobel prizes, government effectiveness, and low homicide. Causality runs from national IQ to GDP, not reverse. National IQs predict immigrant wages as well as individual IQ predicts native performance. South/Central American national IQs average 0.5-0.8 SD below European nations. US Hispanics have g-loaded IQ 0.5-0.8 SD below whites. West Indian national IQs average 0.5-1.5 SD below European nations. West Indian black immigrants to US match African-American performance despite selection. Second-generation Antillean immigrants to Netherlands have IQ 0.8 SD below Dutch whites. Within African-Americans, skin color correlates .15 with IQ, consistent with hereditarian hypothesis. Lighter skin links to higher SES, education, and lower crime within blacks and Latin Americans since 19th century. NE Asians have lowest crime rates, Europeans medium, Africans highest. US black percentage correlates .69 with city violent crime. State and national IQ-crime-skin color manifolds mirror each other.