Why was nativism so strong in the years 1900 to 1930 approximately?

Why Was Nativism So Strong in The Years 1900 To 1930 Approximately?
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Nativism is a situation whereby the nation of a given country carries out activities with the aim of benefiting the citizens more as compared to the immigrants. In the years 1900 to 1930, Canada was experiencing a huge influx of refugees, and therefore, the government had to do something to prevent the population from increasing further as this could have resulted to a scarcity of resources. The immigrants were fleeing from war in their countries while others were seeking good employment and education opportunities. Therefore, this increase in population resulted in various changes by the Canadian government to ensure that the natives of the nation did not suffer the scarcity of resources. By the end of the year 1920, Canada was celebrating a lot of technological changes which had eased their ways of doing business. Such technology created classes whereby those in the in the cities were obliged to get used to the various cultural changes while those in the villages had to maintain their traditional ways of living. The prosperous Canadians had a reason to celebrate due to the new era of consumption and leisure. On the other hand, the villagers expressed a huge disagreement on the meaning of a good life and therefore, they rejected the social changes through the use of biblical religious values. They also expressed their fears about cultural equality and diversity that was being brought in Canada by the immigrants. Most of the immigrants settled in the cities. Therefore, nativism in Canada increased as a result of the need to reduce the number of immigrants coming into the country, the rejection of the new cultures and religion brought by the immigrants, and the elimination of radical politics.[Avery, Donald. Reluctant host: Canada's response to immigrant workers, 1896-1994. McClelland & Stewart, 1995.]
The huge number of immigrants was a threat to the Canadians due to the erosion of resources. For instance, when the British first came to Canada in the year 1900, they found plenty of fertile lands which they used to carry out agricultural activities. The business was doing well, and this led to more British migrating into Canada to take advantage of the fertile lands. This move did not make the Canadians happy, and therefore, it resulted in a rule of deporting the immigrants back to the countries from which they had come from. As a result, the deportation played a substantial role in managing the labor supply because the natives were not getting enough job opportunities in the firms since they were reserved for the fellow immigrants. It also helped in maintaining social order because the immigrants were facing a lot of discrimination from the native Canadian. Often, such discrimination could result in fights and hence disrupting the peace of the nation. In addition, following the industrial revolution, the Canadian government started to have concerned about the industries' demand for cheap immigrant labor. This denied the eligible Canadians the opportunity to explore their talents and skills in the workplaces because they barely got the jobs. The immigration department was also reluctant about the issuing of permanent work permits, b...