| Year | Event |
| Early 1939 to 1945 | Maasai who used to live in Serengeti are forcibly moved to NCA paving way for the upgrading of the Serengeti National Park |
| 1960 | Establishment of Maasai Mara National Park in Kenya to join Serengeti, blocking the movements of Maasai |
| 1974 | People were removed from two craters inside the Ngorongoro Conservation Area |
| 1975 | Cultivation inside NCA was prohibited |
| 1976 | Maasai were prohibited to enter Oldupai George |
| 1980 | Firewood collection by Maasai were prohibited |
| 1985 | Establishment of structural adjustment policy which prohibited pastoralists’ use of land for grazing and given to commercial agricultural investment, mining companies and wildlife conservation expansion in Simanjiro area |
| 1987 | Anti-cultivation practices around NCA were operationalized |
| 1988 | Eviction of pastoralist from Mkomazi Game Reserve |
| 1994 | Eviction of people from Saadani National Park |
| 2000 | Forceful eviction of peasant farmers from Ikorongo/Grumet Game Reserve |
| 2006 | Forceful eviction of pastoralists and relocation of rural communities from Usangu plains, followed by Ruaha National Park expansion |