That the Japanese in America have been able to make rapid progress in the Christian religion has been due to the generous aid and wise direction of the American churches. Within less than thirty years Christianity has become deeply rooted among the Japanese communities, exerting the most wholesome and powerful influence in uplifting their living conditions. In 1911, the _Den Do Dan_, or Japanese Inter-Denominational Mission Board, was organized with a view to carrying on a systematic campaign for evangelistic as well as community service. The Mission Board has been successful in propagating Christianity among the Japanese. This is clearly shown by the fact that at the present time there are sixty-one Protestant churches on the Pacific Coast, besides fifty-seven Sunday schools. The greatest success of the Board, however, has been attained in the field of practical social service, where the organization of young people's Christian associations, the campaign against gambling and other vices, relief work among the needy, and the promotion of Americanization, have been successfully carried out.[53] Judging from the small percentage of illiteracy and the complete system of Japanese compulsory education, the Japanese in America do not seem to be much behind the corresponding elements in the American population in average intelligence. Only in English are they markedly weak. The importance of a knowledge of the language in assimilation can hardly be exaggerated. It is the gate through which the alien can arrive at an understanding of American institutions and culture. The weakness of the Japanese in English is chiefly due to the radical difference of the language from their own. Statistics indicate, however, a decided increase in the number of those who can command English. The census of 1900 showed that less than 40 per cent. of the Japanese in America could speak English, but in the census of 1910 the rate increased to 61 per cent.[54] The rate for foreign-born whites in 1910 was 77 per cent. The economic status of the Japanese appears to be about the same as that of European immigrants. This is indisputable from the sheer fact that the earnings of both are about the same. The only difference is that the Japanese show a tendency to mediocrity of earning power without becoming either paupers or millionaires. This is due to the fact that while there is an abundance of work offered to Japanese which enables them to earn a comfortable living, all avenues for a greater economic success are closed to them. No sooner do the Japanese show signs of some small success in agriculture than the privilege to till the soil is denied them. A similar restraint is now being attempted on the Japanese progress in fishing in California. In a sense, economic welfare is the foundation of cultural and spiritual progress, and to be denied the opportunity to make progress in this field is a heavy disadvantage.