Final answer:
Technoblade disconnected the redstone wiring to the TNT under Manberg.
Step-by-step explanation:
The redstone wiring to the TNT under Manberg was disconnected by Technoblade.
In this scenario, Technoblade took the action of disconnecting the redstone wiring. This means that he physically or electronically interrupted the connection between the redstone circuit and the TNT. As a result, the TNT would no longer be triggered or activated by the redstone signal, effectively disabling it.
It is important to note that the given information does not provide any additional details or context about why Technoblade disconnected the redstone wiring or the consequences of this action.