At the same time , Firestone arranged a $5 million private loan to Liberia .
In 1926 , the Liberian government gave a concession to the American rubber company Firestone to start the world 's largest rubber plantation at Harbel , Liberia .
At the same time , Firestone arranged a $5 million private loan to Liberian .
In 1926 , the Liberian government gave a concession to the American rubber company Firestone to start the world 's largest rubber plantation at Harbel , Liberia .