In what year did William McKinley first take office as President?

Which number president was William McKinley? Who succeeded William McKinley as President of the United States? Which political party did President William McKinley belong to? Which president served from 1897 to 1901? In which state was William McKinley born? Who was William McKinley's first Vice President? Under which president did Garret Hobart serve as Vice President? Under which president did Theodore Roosevelt serve as Vice President?