Since World War II, a spate of interpretations of empire and imperialism has issued from the press. In part the interest stems from the progressive decolonization of much of what had previously been part of European empires. In part it arises from a present-minded concern with expansion by the modern superpowers, the United States, the Soviet Union and, more recently, China. Nor does the decline of the former great powers of western Europe lessen interest, for their loss of empire seems, for some, a manifestation of Spenglerian theory and for others, a causal factor in that decline. Certainly Great Britain's plummet from first-rate-power rank to a considerably lesser plane has been most spectacularly accompanied by a recessional from palm and pine. Not surprisingly, given the context of their writing, the new sociological and psychological studies and assessments are markedly critical of and variant from the old. New perspectives presented by an epoch seemingly finished and new techniques drawn from the behavioral sciences have molded historians’ assessment of the old “new imperialism's” apogee between 1870 and 1914.