A stable and trustworthy economy. If the inflation is high that means that the currency of a particular country is affected significantly by international negative tendencies. As more stable and strong is the economy as less it suffers from international trends.
When striking the ball on your non-dominant side, it is a backhand volley. Note: for the backhand volley it is best practice to only use 1 hand on the volley even if you have a 2-handed backhand groundstroke.