Uhh okay. You’re talking about dozens or hundred people or so at a time, thousands of people per year, mostly prisoners of war, traded domestically, deported over a period of 1,700 years.
And it still not half as many slaves as were deported across the Atlantic in only 350 years. Millions of slaves died on the voyage. They built vast trading routes and employed slavers as a business model, building customized ships to transport 600 slaves at a time.