When passing or being passed by trucks you should?

When a passing a truck if you are in the rear of the truck but cannot get a visual on what could be ahead and you want to change lane just to pass it you should first get a visual if there is no car in the other lane to avoid collision and if you are passed by a truck you should not speed up and let the truck passed you to avoid accident

Ongoing civil wars western roman empire finally collapsed476 c.e. romulus, the last of theroman  emperors in  the west, was overthrown by the germanic leader odoacer, who became the first barbarian to rule in rome. the order that the  roman empire  had brought towestern  europe for 1000 years was no more.