At https://phys.org/print467383932.html … a new book, 'Revealing Greater Cahokia, North America's First Native City' which says it had a population between 10 and 30,000 between 1050 and 1200AD (its hey day). Temples, cemeteries, an assortment of houses, storage buildings, mounds and monuments in and around what it is now St Louis and East St Louis. This is the product of a long archaeological investigation in a little known part of Cahokia. It's demise came around 1300AD, during a period of climate change (in Europe as well as in America) and conflict.
At https://phys.org/print467458153.html … new tombs found in the Nile delta, from the Second Intermediate Period. More information to come.