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1; How has nursing practice evolved over time? Discuss the key leaders and historical events that have influenced the advancement of nursing, nursing education, and nursing roles that are now part of the contemporary nursing profession.2; Discuss the difference between a nursing conceptual model and a nursing theory.Select a nursing theory and provide a concise summary of it. Provide an example in nursing practice where the nursing theory you selected would be effective in managing patient care.A PAGE FOR EACH QUESTION, TOTAL OF TWO PAGES, NO FORMAT IS NEEDED, JUST CITATIONS