HISTORY FORM  1
B.     EXTERNAL CONTACTS THROUGH INDIAN OCEAN

1. IMPACT FROM THE EAST
1.1.  Rise of coastal city states
1.2.  Evolution of Kiswahili

2.IMPACT FROM EUROPE
2.1.  Portuguese expansion in Africa and Asia
2.2.  Portuguese infrusion along East African Coast

Oman Arab domination.
a. Motives of the coming of Oman Arabs to East Africa
b. Impact of Oman Domination in East Africa