Contrasts between the American and British Political Systems SimilaritiesThe first western capitalist political systems created by British are praised as the source and model of the western political system. On the basis of absorbing and drawing lessons from Britain ,U.S.A. has formed the most perfect political system in the contemporary capitalist countries. So there are many similarities between the American and British political systems.1. Head of StateBoth the U.S. and British politi