Use 'what became of' when discussing the past outcomes and whereabouts.

Past Outcomes

Use 'what has become of' to inquire about the current state or condition.

Checking Status

Use 'what will become of' to express concern or curiosity about the future.

In academic contexts, emphasize ongoing research or developments.

In speculation, it's used to pose questions about potential outcomes.

Pose questions on traditions and values within a cultural context.

Consider how something has evolved or changed over time.

Reflect on significant changes to express nostalgia or concern.