unsere Vorfahren begannen, über die

unsere Vorfahren begannen, über die mysteriösen Erdbeben nachzudenken (und über
die Flutwellen, die manchmal nach einem Erdbeben hereinbrechen) und sich nach ihrem
Ursprung zu fragen. Sie erzählten sich Geschichten und erfanden Legenden zur Erklärung.

Results (English) 1:

our ancestors began to think about the mysterious earthquakes (and over
the tidal waves, which sometimes come after an earthquake) and after her
origin to ask. They told stories and invented legends to explain.

Results (English) 2:

our ancestors began to think about the mysterious earthquakes (and
the tidal waves that sometimes befall after an earthquake) and after her
to ask origin. They told stories and invented legends to explain.

Results (English) 3:

our ancestors began to ask oneself about the mysterious earthquakes to think (and sometimes über
die tsunamis, after an earthquake befall) and for ihrem
Ursprung. They told themselves stories and invented legends for the explanation.