... of the economy at Birimi, a settlement close to the northern edge of the West African forest in modern Ghana. This was an outlier of the Kintampo culture whose other sites, further south in the ... bc,while others moved more quickly up the main waterways until, at about 1000bc, they reached the eastern edge of the equatorial forest in the broad area of the great East African lakes. There they ... fatalto cattle. By the first half of the second millennium bc, cattle were herdedclose to the top of the Niger bend and on the southern shores of Lake Chad.Shortly afterwards, the first strong archaeological...