How does the nebular theory explain the main asteroid belt location?

Jupiter's gravitational influence prevented full coalescence of planetesimals

The location and nature of the main asteroid belt, situated between the orbits of Mars and Jupiter, is interpreted by the nebular theory not as an anomaly, but as a predictable outcome of the dynamic interactions during the accretion phase. The theory posits that the region contained plenty of planetesimals capable of forming a planet. However, the rapid growth and immense gravitational presence of the nearby giant planet, Jupiter, exerted powerful, repeated gravitational influences on these smaller bodies. This constant gravitational stirring and interference prevented the planetesimals in that specific zone from achieving the necessary stable, slow accretion required to coalesce into a single, large planet, leaving behind the belt of fragmented rocky bodies as remnants.