Which of the following is the correct translation of that Bangla sentence ?

The emergence of Bangladesh in the map of the world is a memorable events of the twentihth century.

The emergence of Bangladesh on the map of the world is a memmorable event of the twentihth century.

The emergence of Bangladesh in the maps of the world is a memrable event of the twentihth century.

The emergence of Bangladesh in the map of the world is a memorable event of the twentihth century.