I came back around to to the top level and started in with history again. This time, I added a few links to the main history page: languages of the world, customs, and economic production.
Prehistory now has links to foodstuffs, language, customs, occupations, economic activity, and pagan religion.
Early prehistory has links to biohistory and the human body,
Middle prehistory has links to geohistory, biohistory, the human body, demography, Asian geography, foodstuffs, language, customs, and social types: a significant expansion of it. I also added a link to Pakistan, which pushes Brazil to the Americas and the United States to North American Indians.
Late prehistory has links to geohistory, biohistory, the human body, Demography, Asian geography, foodstuffs, language, customs, education, and social types. I added a link to Bangladesh, which pushes Pakistan into Asia and Indonesia into Southeast Asia.
This time, I decided to divert from the straight pursuit of history and look at the targets of these links, especially those that have more than one link to them.
Within Earth science, there is a link to the planets, within Astronomy. Geohistory got a link to atmospheric science, in preparation for study of climate change. The Cenozoic got a link to Sociology, so that eventually I can start looking at national resource, for instance.
I didn't see any obvious resources for biology or biohistory, but Cenozoic life got a link to institutions.
I didn't see any need to expand the main Personal studies page, but the Human body page got links to biological behavior, religion, and communities.
Likewise, I saw no need to expand the main Anthropology page, but demography got a critical link to the human life cycle, human geography got linked to ecology, which opens up the possibility of biogeography, and Asian geography was linked to science and human ecology
The culture page got a couple of long-overdue links to Middle prehistory and late prehistory. Material culture has been short on specific examples, so I started linking to cities, beginning with Tokyo. Foodstuffs also need specific examples, so I started linking that to communities and nations. Conceptual culture also got linked to Tokyo, and language to religion. Behavioral culture got links to New York City and Indonesia, while customs got a link to peoples of the world, and occupations a link to religion
Within Institutions,I skipped the main page. Education got links to New York City and Indonesia. Economics got an important link to social types, and economic activities got a link to culture that I have been wanting to make for what seems like ages.
A lot of these links were made in the reverse direction as well, so I'm not going to trouble to track them all.