Pregnancy. Found which caused a problem?

Sir, last Saturday(19) our doctor scanned my wife and told us water level is slightly low. Suggested to take astymun drip. Monday (21) afternoon they gave astymin drip (2units RL 1 unit astymin 1 unit ).Monday night they told heartbeat is normal for child.Tuesday morning at 8.30am labour pain started. They checked four times after that. At 1.30 suddenly heart beat of foetus decreased. They took my wife to OT immediately and did cesarean. They took my baby at her last breath and helped her to breath.When they called me inside OT ,they were pressing her chest with small tube inside her mouth. I understood that at that time everything was over. My baby died.They told me that the cord was prolapsed. 1. Reason for cord prolapse? 2. Astymin drip caused a problem? 3. In saturday 's scan doctor found multiple cord loop found which caused a problem? Pls help me.. Thank you...