 Complete the following phrase:  In summary, in spite of multiple efforts and heavy sacrifices during the Easter Offensive, the PAVNVC accomplished very little in the Mekong Delta. Route QL-4, which was one among the major objectives, remained open throughout his offensive save for brief periods of traffic interruption. They had failed to strangle this vital lifeline and had also failed to disrupt the pacification effort. No district town ever fell into enemy hands, even temporarily. Despite some ups and downs in the pacification effort, the PAVNVC were unable to achieve any additional gains in population control. Although not as dramatic as the combat exploits achieved in An Lộc, Kontum or 