120,000 BP
A Small Asteroid hits in the area of the Congo river mouth. while it doesn't do much damage, the rebervations cause a hot spot to form in the vecinity.
105.000 BP
The hot spot burns through in the vicinity of OTL Brazzaville.
100.000 BP
The Lava has formed a dam across the Congo river a dozen feet high, forming a small lake.
75.000 BP
The interaction of the water and the Lava has formed a Dam Several hundred feet high reaching across the whole Congo Valley.
60.000 BP
The weight of the Volcano, and the Inland sea, has been stressing the Cameroon Rift valley, Over the next couple thousand years this stress will be relived in a series of Massive Earthquake. When they are over Landslides thruout the Guinea Highlands Have blocked off the Niger River Valley.
55.000 years BP
The Niger Sea overflows the last mountain pass and starts flowing down into Lake Chad
50.000 BP
the Congo Sea overflows the last mountain pass and starts flowing down into the Niger Sea.
48,000 BP
The Twin Seas break thru the northern Mountains and begins flowing to the NNW thru Niger.
47.000 BP
Having filled many of the Depressions along the way the River turns in west Central Lybia and heads NNE toward the Gulf of Sidra.
40.000 BP
Most of the Depressions between the Atlas mountians and the Nile Plateua, have been filled by Rain, allowing a Sahel to form. this is covered by nomadic Herdsmen who travel from Lake/Oasis to Lake/Oasis following their herds. there are settled fisherman along the Great River, in small villages, trading their fish, for Meat, and Leather from the Herders.
12.000 BP
ICE AGE ends, Weather patterns are shifting, the western end of the Great Sahel is drying a Little, Foraging parties are having troubles, some of the Fishermen along the Great River, begin gathering Seeds and Boardcast sowing them so to ensure they will be there next season.
10.000 BP
nomads have come down from the Nile Platuea, and settled among the tribesmen along the fertile Nile Valley. They bring with them the idea of Sowing Seeds. a Population boom begins