An evaluation of the Roosevelt administration's perception of Canada, her evolution in the US politics 1939-45. From a mere business associate and a provincial British Dominion, Canada evolved into a US continental defence partner, cardinal supply provider and a loyal ally. How much Canadian freewill and coercion imposed by the powerful southern neighbour was it? 'The book analyses important and attractive topic that is still not fully unexplored. ( ) It is a novel, ambitious and difficult task; yet, quite successfully completed. The subject is apt and deserves praise.' Prof. dr hab. Halina Parafianowicz 'The thesis contains a lot of interesting primary sources. The research questions are stimulating ( ). I disagree with a few conclusions of the author, which proves he made me reach for the primary and secondary sources. ( ) The subject matter is attention-grabbing and controversial.' Prof. dr hab. Izabella Rusinowa 'The author demonstrates good methodological skills as well as the ability to research and popularise history. Also, M. Bogdanowicz has the appropriate knowledge of the contents of the archives, necessary for successful research.' Dr hab. W odzimierz Batóg, Prof. UJK