they had to get rid of some peoples home
Their need to keep a serf population under control, and protect their land.
by destroying the land around to make more for themselves
To conquer more city-states and not get raided
They worked the land, and rendered half their produce to Sparta, which allowed the Spartans to concentrate on supervising them, defend the territory, and take part in their own society.
conqured neighboring land conqured neighboring land
Spartans trained in the agoge daily. They fought their rivals in times of need.
Spartans
conqured neighboring land conqured neighboring land
Their land was held in common, farmed by the serf population who were the original holders until the Spartans conquered them and took over the countryside. The Spartans didn't want individual land - the serfs did it all, delivering up half their produce, which allowed the Spartan citizens to concentrate on matters military.
bought land from their neighbors.
The Helots were the Spartans slaves. If the Spartans treated them well they would have been more likely to successfully rebel.
They conquered the southern Peloponnesian Peninsula and turned the people int serfs - they retained their farms, but had to deliver half their produce to Sparta.