歐洲內部貿易指數在1951年第二季度為136（1938 = 100），第一季度為139，1950年最後三個月的峰值為143。雖然錄得跌幅，但1951年上半年歐洲貿易量比1950年上半年多五分之一。儘管歐洲內部貿易的增長受到許多因素影響，例如工業生產提升和西德恢復其傳統貿易地位，但截至1951年6月30日年度貿易額得以增長25％，是有賴於歐洲經濟合作組織和歐洲支付聯盟的貿易自由化計劃。
The following cartoon was published in March 1948, which was the prologue of Cold War. In the cartoon, the capitalist camp was on the left, Harry Truman—the man who opened his arms —was the US President at that time; communist camp was on the right, Stalin—the man who opened his arms—was the General Secretary of the Communist Party of the Soviet Union at that time. The rugby in the centre shows the map of Europe, the coloured part is satellites of Eastern Europe, which are the communist countries that controlled by USSR.
The following extract is adapted from report of the US government to the Congress about the post-war economic development in Europe.
The index of volume of intra-European trade was 136 (1938=100) in the second quarter, as compared with 139 in the first quarter and a peak of 143 in the last three months of 1950. Despite this decline, the volume of intra-European trade for the first half of 1951 was one-fifth larger than in the first half of 1950. While many factors, such as the growth of industrial production and the restoration of Western Germany to its traditional trading position, have influenced the growth of intra-European commerce, the outstanding contributions to the 25-percent rise in the volume of trade for the year ended June 30, 1951 were made by the trade liberalization program of the OEEC and the European Payments Union.
(a) Infer from Source A two characteristics of European economic integration after the Second World War. Explain your answer with reference to Source A.
(b) Is Source B meant to support or oppose Europe to have economic integration? Explain your answer with reference to Source B.
(c) How effective was the European economic integration until 1965? Explain your answer with reference to Source A and B and using your own knowledge concerning European economic integration in the period of post war till 1965.