Power is not simply considered in terms of class struggle, but rather in a more general sense. The general focus here is on inequality, and how power is related to those who exercise authority over economic interests and interests in related sectors. Economic inequality is viewed as causing and exacerbating other forms of inequality. Materialists will study other forms of inequality, but will often if not always relate the issue back to economic inequality. There"s a lot of overlap between the materialist and discursive strands. Focus on world order , which are large-scale sets of ideals or interests, which seem to be dominant in the global economic system. For cox, the period of the 1970s was notable for it"s institutional instability (the. Keynesianism, the fixed exchange rate, etc. collapsed, capital mobility became more common, trans-border trade became more prevalent) The rise of economic globalization or hyper-globalization.