In which area would weathering by frost wedging probably be most effective?

Temperate Zones are the aeas of earth amid the high and low latitudes aka moist or mid-latitude climates, those are the areas between the tropic and the polar areas, which generally have 4 seasons; in those areas weathering by frost wedging is likely more effective; rocks experience small cracks aka joints due the cycle of water in extreme climates.

landlessness of ordinary people

^^something like that^^^

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.