Ow can we account for the dramatic shift in attitudes towards immigration in Argentina between 1860 and 1914?

I would like you to make up the rest of the references with books, but here are some journal articles i would also like you to use:

remember the focus is Argentina so any other countries mention should be used in a comparative study...

Baily, S. (1980).  Marriage Patterns and Immigrant Assimilation in Buenos Aires, 1882-1923 . Hispanic American Historical Review 60:1.

Baily, S. (1983).  The Adjustment of Italian Immigrants in Buenos Aires and New York, 1870-1914 , The American Historical Review 88:2.

Baily, S. (1999). Immigrants in the Land of Promise: Italians in Buenos Aires, 1870-1914. London: Cornell University Press.

Barr Mele, P. (1998). Cowboys and constructions: National representations of pastoral life in port-Portalian Chile. Journal of Latin American Studies, 30, 35-61.

Cara-Walker, A. (1987).  Cocoliche: The Art of Assimilation Dissimulation among Italians and Argentines. Latin American Research Review 22:3.

Delaney, J. (1996). Making sense of modernity: Changing attitudes towards the immigrant and the gaucho in turn-of-the-century Argentina. Comparative Studies in Society and History, 38 (3), 434-459.

Delaney, J. (2002). Imagining El Ser Argentino: Cultural Nationalism and Romantic Concepts of Nationhood In Early Twentieth-Century Argentina Journal of Latin American Studies, Volume 34, Issue 03, August 2002, pp 625-658.

Klein, H. (1983).  The Integration of Italian Immigrants into the United States and Argentina: A Comparative Analysis . The American Historical Review, 88:2, 306-29.

Solberg, C. (1981). Immigration & Nationalism: Argentina and Chile, 1890-1914. Austin & London: University of Texas Press.

Solberg, C. (1969).  Immigration & Urban Social Problems in Argentina & Chile, 1890-1914 . The Hispanic American Historical Review, 49:2, 215-232.

Vogel, H. (1991).  New Citizens for a New Nation: Naturalisation in Early Independent Argentina , Hispanic American Historical Review 71:1.

Zimmerman E.A. (1992).  Racial Ideas & Social Reform: Argentina, 1890-1916 . The Hispanic American Historical Review, 72:1, 23-46.
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