When and where did Paul Revere's engraving first appear? Does this influence the meaning?

The primary purpose of a certificate of confidentiality is to: allow law enforcement to investigate abuse cases.protect researchers from disclosing conflicts of interest.prevent subjects from knowing the purpose of a study.protect identifiable research information from compelled disclosure.

Transcendentalist walt whitman captured the spirit of young america by creating

Describe how a person can have both high and low self-esteem.