The most accurate response regarding the impact of global trade during the seventeenth century on the Swahili coast of East Africa and the Kingdom of Kongo is:
The Kingdom of Kongo lost control of the slave trade, while the Swahili coast lost its power to extract resources.
This option effectively highlights the differing experiences of both regions due to their involvement in global trade, particularly with the Portuguese. The Kingdom of Kongo faced significant challenges and ultimately lost significant control over the trade, including the lucrative slave trade. On the other hand, the Swahili coast, which had been a significant trading hub, saw a decline in its power and ability to extract resources, influenced by various factors including shifting trade routes and colonial interventions.