Answer :
The contribution of Mexican Tejanos to resistance by enslaved people is that "They acted as conductors on the southern route of the Underground Railroad"
- This is evident in the fact that during the American civil war, the Tejanos assisted the enslaved people through a mini underground railroad in the southern part of Texas.
- Most of these Tejanos are poor Mexicans who would assist the runaway slaves escape into Mexico.
Hence, in this case, the correct answer is option D "They acted as conductors on the southern route of the Underground Railroad"
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