Which of the following statements about slavery is true?

-it existed only in africa before the sixteenth century.

-it first began in africa in the 1500s and then spread to other parts of the world.

-it had existed all over the world in various forms for thousands of years

-it began with the spanish and portuguese transatlantic slave trade.

Of all the option given, the correct statement about slavery is that it had been in existence for thousand years in various forms all over the globe.

Option C

Explanation:

Slavery has been into existence since many eras and has seen many culture and tradition of many nation. Ancient history has been the initial witness and can be seen even today if looked deeply.

Slavery system had many upgrade and downgrade based on the national socio– economic conditions. Today, slavery has been banned and made illegal but many can see penal labour. Human trafficking sets the example.

b is the answer i am assuming