Be/lie at the bottom of something verb phrase
His sleep deprivation lies at the bottom of his bad attitude.
Money is at the bottom of many problems and conflicts.
1. To anger someone
2. To cause someone begin talking about something at length
3. To cause something to explode
4. To cause something to occur or activate
5. To make something distinct or attractive
6. To reduce something, especially the cost of something
To create sonething or bring something into existence
1. To turn a crank on something in order for it to start working.
2. Used to prompt or cause someone to do something.
3. To intensify.
4. To begin.
5. To increase the volume of something.
The verb "be/lie" should be conjugated according to its tense.