Question

1. which characteristic is common to all the locations shaded on the map? map symbols reflect relative numbers of maquiladora workers. coniferous forests tertiary economic development widespread practice of hinduism centers of maquiladora workers clear all

Explanation:

The map shows locations with maquiladora workers (factories, often near the US - Mexico border). Coniferous forests are not typical of all these areas. Tertiary economic development (services) isn't the focus here (maquiladoras are manufacturing). Hinduism is not widespread in Mexico/US Southwest. The shaded areas reflect centers of maquiladora workers as per the map's note.

Answer:

Centers of maquiladora workers