This if for reading!! Which text feature bolds special vocabulary?

a
Headings

b
Index

c
Key words

d
Table of Contents

the answer is b index

Explanation:

answer; /// i believe that the correct answer is (divison of labor);

was a long, primarily nonviolent series of events to bring full civil rights and equality under the law to all americans. the era has had a lasting impact on united states society, in its tactics, the increased social and legal acceptance of civil rights, and in its exposure of the prevalence and cost of racism. in the south violence and fraud in southern elections from 1868 to 1876, which had reduced black voter turnout and enabled southern white democrats to regain power in state legislatures across the south