Answer: Traditional subsistence agriculture has turned into industrial mono culture farming. Among the negative effects are deforestation, soil degradation due to the use of toxic pesticides and the lack of variety in crops, decreased food security due to the use of agricultural lands for commercial crops with no alimentary value such as rubber and abusive private appropriation of land by industrial agricultural corporations. Among the positive effects in Thailand and China, because of their logistical, financial and educational support of poor farmers, the latter have been able to take advantage of the rubber boom and prosper, leaving poverty behind.
Jackson needed more room for farming as technology advanced. So, Jackson took over the Native American Territory to provide more land and also because Jackson disliked Native Americans. Hope this helped:)
