These were created by congress as part of the ethics in government act and were put in place to ensure government officials receive a fair investigation.

a.
independent councils

c.
ethics councils

b.
congressional councils

d.
federal councils

The Independent Councils were created by Congress as part of the Ethics in Government Act. The said councils was tasks to investigate the government officials, ti covers issues of honesty a transparency in government such as bribery, political and police corruption. legislative and legal ethics. 

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Explanation:

The cause of the Encomienda system was the Spanish crown offering land and Indian slaves to conquistadors going to the new world. The effect was heavy depopulation of Indians from brutality and disease leading into African slaves becoming a new labor force.