Simplify the following text for a Grade 6 native English-speaking person.
Original: It had grown in importance because of threats to the coastal cities Paphos and Salamis , which made many people flee to the centrally located Lefkosia .
Simplified: It had grown in importance because of threats to the coastal cities Paphos and Salamis . These threats made many people leave the coast of the island and move to Lefkosia in the center of the island .