Remove all grammatical errors from this text: To conclude, the train accident that had happened in Germany could have been prevented with the use of psychology in the design process.
The train had to be stopped.
The train had to stop, but the train was not stopped.
The train had to stop, but the train was not stopped.
The train had to stop, but the train was not stopped.
The train had to stop, but the train was not stopped.
The train had to stop, but the train was not stopped.
The train had to stop, but the train was not stopped.
The train had to stop, but the
The train accident was caused by a train derailment, which was caused by a faulty train.
The train was derailed because of a train accident.
Correct: The train was derailed because of a train accident.
The train was derailed because of a train accident.
Correct: The train was derailed because of a train accident.
The train was derailed because of a train accident.
Correct: The train was derailed because of a train accident.
The