I believe the answer will be C. Monarchy
Taxing African Americans when they voted. (Poll Taxes)
Jim Crow was a southerner who didnt believe that freed slaves should be allowed to have equal rights, so he created harsh Jim Crow laws to prevent them from many freedoms including voting.
Answer:
It generates new insights from previous analyses
Feasibility of both longitudinal and international comparative studies.
It saves time.
DISADVANTAGES
Inappropriateness of the data. Data collected by oneself (primary data) is collected with a concrete idea in mind. Usually to answer a research question or just meet certain objectives this sense, secondary data sources may provide you with vast amount of information, but quantity is not synonymous of appropriateness.