Answer:
Hope that helpsss :0
Step-by-step explanation:
I think it fgoes in this order.
1. the prrotogous arrived in 1483
2. Kongo and portugai have a partnership of trade goods
3.konga expanded their kingdom with the help of portugai
4.portugai wanted more slaves form kongo
5.the slave trade grew and drained the workfroce of kongo