verursachen
to cause
To be the cause or trigger of something, usually something negative such as damage, costs, or a problem.
Der unachtsame Fahrer hat einen schweren Unfall verursacht.
The careless driver caused a serious accident.

to cause
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to cause
To be the cause or trigger of something, usually something negative such as damage, costs, or a problem.
Der unachtsame Fahrer hat einen schweren Unfall verursacht.
The careless driver caused a serious accident.

The verb 'verursachen' (to cause) contains the noun 'die Ursache' (the cause). So it literally means to be the cause of something.
Was ist die Ursache für den Stromausfall?
What is the cause of the power outage?
'Verursachen' (to cause) is almost always used for negative events or results. You cause problems, costs, an accident, or pain, but not joy.
Starker Regen verursachte Überschwemmungen in der Stadt.
Heavy rain caused flooding in the city.
The verb always needs a subject (the cause) and an accusative object (the result). The structure is: Who/what causes what?
Ein Kurzschluss hat den Brand verursacht.
A short circuit caused the fire.
to do / make
'machen' and 'verursachen' can both express that something has an effect. 'machen' is very general and often used in everyday speech, for example with feelings: 'Das macht mich müde' (That makes me tired). 'verursachen' is more precise and names the cause of something. It is especially often used for problems, damage, costs, or illnesses. 'machen' can sound neutral or casual, while 'verursachen' sounds more factual and often more negative. When it is about a clear cause of a problem, 'verursachen' is usually more precise.

Der starke Regen verursacht auf der Straße lange Staus.
The heavy rain is causing long traffic jams on the road.
Der lange Schultag macht Mila heute sehr müde.
The long school day is making Mila very tired today.