And certification is beneficial for Acre's native tribes people. ... He advocated a return to sustainable agricultural systems and urged his fellow Brazilians to non violent protest against corporations that would rob them of their livelihoods. ...
When the situation arose that African slaves didn't adapt to the conditions properly, Native Indians were forced to labor. ... Huge concessions and monopolies were given to foreign companies in return for the development of domestic suppliers of the required components. ...
No source of rubber comparable to the Hevea tree has been found in any other part of the world, although most of the world's rubber now comes from a variety of Hevea which is much more productive than the native wild trees of the Amazon . ... People from Ceara poured into the Amazon during part of the rubber period in numbers averaging 20,000 a year; but few of them returned. ...
