relapse
The Spanish term 'recaer' translates to 'relapse' in English. It is most commonly used in a medical context to indicate that a person's health condition has declined after a period of improvement. The term can also be used more generally to denote returning to any bad habits or negative situation after an interim of recovery or absence.
The country cannot fall back into the same economic crisis.
This sentence illustrates a metaphorical usage of 'recaer' to indicate falling back or returning to an undesirable state or condition, in this instance, an economic crisis.
If you don't take care of your health, you can relapse into illness.
In this context, 'recaer' is used to depict a relapse into an illness. It elucidates on how not caring for one's health could lead to a return of the sickness.
The responsibility for the decision falls on the president.
This example uses 'recaer' to convey the idea of responsibility or burden falling on someone. Here, the responsibility for a decision falls on the president.