Chief Minister Mukul Sangma unfurled the national flag here on Monday as Meghalaya celebrated the 70th Independence Day.Thousands of people gathered at the Polo ground witnessed a ceremonial parade. An Indian Air Force helicopter hovered over the sprawling parade ground showering rose petals.Sangma appealed to all citizens to extend their support to his government in its endeavour to maintain peace and harmony and in implementing the developmental policies and programmes.He said the government had provided an enabling environment for the members of insurgent and militant outfits to withdraw from their criminal activities and avail the rehabilitation package."The state has taken the effective measures to strengthen its internal security apparatus - resulting in better outcomes in our pursuits to restore normalcy and sustained peace for the progress and prosperity of the state," Sangma said.