William Cowper's Poem 'The Negro's Complaint'.

Hark! He answers!--Wild tornadoes
Strewing yonder sea with wrecks,
Wasting towns, plantations, meadows,
Are the voice with which he speaks.

 
He, foreseeing what vexations
Africa's sons should undergo,
Fixed their tyrants' habitations
Where his whirlwinds answer--"No."

By our blood in Africa wasted
Ere our necks received the chain;
By the miseries that we tasted,
Crossing in your barks the main;

By our sufferings, since ye brought us
To the man-degrading mart,
All sustained by patience, taught us
Only by a broken heart;

Need some help?

strewing = scattering over a surface

yonder = over there 

vexation = hardships

tyrant = cruel person, refering to slave owners