According to Progressive Imperialism, the policy of extending the influence to regions in the world under the justification of opening trade becomes the norm. The military supremacy of the US enabled them to set conditions for expanding the markets to areas of the world were formerly there was only local or regional trade and together with the effort to gain economic control comes the political control exerted upon the Panama channel.
As more and more areas of influence come to be dictated by the logics of economic , the foreign policy focuses on using diplomatic means and if this fails the hard politics through military intervention and war are set.
One of the most important innovations of the British Agricultural Revolution was the development of the Norfolk four-course rotation, which greatly increased crop and livestock yields by improving soil fertility and reducing fallow.
