On a global scale, the gender makeup of the migrants referred to in the second paragraph best helps to explain which of the following social changes in home societies in the nineteenth and early twentieth centuries?

We emphasize at the outset that this is a formidable undertaking. There is an enormous literature on the subject ranging over every conceivable genre. These include nineteenth-century political broadsides, serious and masterfully written histories, the 42 volume report of the first Immigration Commission appointed in 1907, focused cliometric studies appearing in scholarly journals, autobiographies that witness the era of high immigration, two forthcoming economic histories of pre-World War I immigration (Ferrie, 1997; Hatton and Williamson, 1998), obscure statistical compendia, and theoretical analyses some of which are highly abstract and mathematically intricate.

Explanation:

b - those executed came from every social and economic class