Did slavery start with African American or before with another race?

They were'nt African-American at first, only Africans.

Slavery has pretty much always existed, as far back as there are historic sources that can be researched.

Ancient Romans held slaves, as well as the old Greeks.

Warring tribes of Native Americans weren't above using each other as slaves either.

Vikings held slaves.

I guess cheap labor has always seemed like a good idea to those in power.

Even among Africans themselves, slavery was common.

Tribes raided other tribes for slaves.

And that's one of the reasons why the global slave trade was so easy to get going.

When Europeans arrived, they didn't have to start by forming hunting parties,(although that happened too) mostly they simply bought people that had already been collected.

'Course, their entry on the market did mean that a lot more people get captured, as the number of customers suddenly increased dramatically