Maybe you could complete a dissertation on the finance impact, outcomes or result of a countries influence on another. If this is something you would be interested in, maybe these examples could help:
A critical analysis of the advantages and disadvantages associated with the CEEC economies joining the European Monetary Union
To date of the Central and Eastern European countries that have joined the EU, only Slovenia (2007), Slovakia (2009) and Estonia (2011) have managed to complete the process of joining the EMU. It was envisaged, however, that the other countries would also join once they had met the necessary fiscal requirements. However, the process of economic implosion presently engulfing the southern Mediterranean states of the EU calls into question whether or not it is in the best economic interests of the other CEECs to follow the example of Estonia, Slovenia and Slovakia. This is a contemporary economic dissertation that benefits not only from a range of established literature on the theories that underpin the case for joining the single currency but also a plethora of contemporary comment on the disadvantages that are grounded in developing political analysis. As a subject area that is inter-disciplinary it also offers vast potential for primary data to be collected via interview.
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