さかのぼ遡sakanoboるruさかのぼ溯sakanoboるru
1.
To move against the current of a river, progressing in the direction toward its source.
2.
To return to a previous time or fundamental origin, often referring to a concept, event, or situation from the past.
3.
To trace back through history or events in order to understand their roots or underlying reasons.
Example:
その教会は１１７３年までさかのぼる。