What types of waves are used to determine mechanical properties and layers of the earth?

Perhaps Seismic waves?

The  franco-prussian  war, a  war  that was  led by prussia a coalition of  german  states, defeated  france. the  war  was the end  of  french  hegemony in europe and resulted in a unified  germany.  i hope this !

Answerscripps institution of oceanography; i believe this is correct plz check first good luck;