The answer would be B, it involved a deliberate effort to eliminate all the people in one ethnic or cultural group.
Genocide is the systematic, deliberate elimination of everyone in a particular ethnic, cultural political, religious, etc, group.
The correct answer is B. Lyndon B. Johnson - Civil Rights Movement.
Explanation
Lyndon B. Johnson (1908-1973) was an American politician and leader who stood out for being provisional president of the United States after the assassination of JFK (1963) until 1969. As a political leader, he stood out for his struggle in favor of civil rights especially racism. Another of his efforts was to help the poor who benefited from the Income Law and the Economic Opportunity Law. So the correct answer is B. Lyndon B. Johnson - Civil Rights Movement.
Otto von Bismarck was the most responsible person for bringing unification
Formal divisions over differences in docterine.