 Complete the following phrase:  In the wake of intensifying political instability, the civilian bureaucracy and military assumed governing power in 1958. Since its independence, Pakistans naked system has fluctuated between civilian and military governments at various times throughout its political history, mainly due to political instability, civil-military conflicts, political corruption, and the periodic coup détats by the military establishment against weak civilian governments, resulting in the enforcement of martial law across the country occurring in 1958, 1977 and 