colony    liberation de facto transfer treaty of cession de jure transfer          merger
0     pondichéry             -   1 november 1954       28 may 1956   16 august 1963     1 july 1963
1  chandernagore             -      26 june 1949  28 february 1951      9 june 1952  1 october 1954
2        karikal             -   1 november 1954       28 may 1956   16 august 1963     1 july 1963
3           mahé  16 june 1954   1 november 1954       28 may 1956   16 august 1963     1 july 1963
4         yanaon  13 june 1954   1 november 1954       28 may 1956   16 august 1963     1 july 1963

Table as JSON:
{"colony":{"0":"pondichéry","1":"chandernagore","2":"karikal","3":"mahé","4":"yanaon"},"liberation":{"0":"-","1":"-","2":"-","3":"16 june 1954","4":"13 june 1954"},"de facto transfer":{"0":"1 november 1954","1":"26 june 1949","2":"1 november 1954","3":"1 november 1954","4":"1 november 1954"},"treaty of cession":{"0":"28 may 1956","1":"28 february 1951","2":"28 may 1956","3":"28 may 1956","4":"28 may 1956"},"de jure transfer":{"0":"16 august 1963","1":"9 june 1952","2":"16 august 1963","3":"16 august 1963","4":"16 august 1963"},"merger":{"0":"1 july 1963","1":"1 october 1954","2":"1 july 1963","3":"1 july 1963","4":"1 july 1963"}}