Answer: Copper, iron, lead, zinc, gold, silver, and tin. Hope this helps :)
The answer is
Longitudinal waves.
The particle displacement in a longitudinal wave is
parallel to the direction of wave propagation. The ground particles simply oscillate
back and forth their equilibrium positions unlike transverse waves that do not
move along with the waves but rather oscillate up and down their individual
equilibrium positions.
other countries became involved - gradpoint
42 or 43 is the number of how many total countries in the western hemisphere