CREATE TABLE table_2147588_3 (reason_for_change VARCHAR2, date_of_successors_formal_installation VARCHAR2)

What change caused a change of staff in March 9, 1865?
SELECT reason_for_change FROM table_2147588_3 WHERE date_of_successors_formal_installation = "March 9, 1865"
SELECT "reason_for_change" FROM "table_2147588_3" WHERE "March 9, 1865" = "date_of_successors_formal_installation"