What is the best description of the change in the east African slave trade after 1500?

After 1500, the East African slave trade expanded significantly due to increased demand for labor in the Indian ocean trade networks and plantations, particularly in the Americas and the Arabian Peninsula. European powers, including the Portuguese and later the British, intensified their involvement, establishing coastal trading posts and facilitating the capture and transport of slaves. This period saw a shift from local and regional slave markets to a more globalized trade system, leading to higher volumes and increased brutality in the capturing and transporting of slaves. Additionally, the trade began to integrate more deeply with the broader Atlantic slave trade dynamics.