Table: gov_successors
Columns: state_class
vacator
reason_for_change
successor
date_of_successors_formal_installation

Question: Where was the successor formally installed on December 3, 1858?
SQL: SELECT "state_class" FROM gov_successors WHERE "date_of_successors_formal_installation" = 'December 3, 1858'

Question: Why did the change happen in the state where the formal installation happen on February 14, 1859?
SQL: SELECT "reason_for_change" FROM gov_successors WHERE "date_of_successors_formal_installation" = 'February 14, 1859'