Why was the city of Shechem significant for the renewal of the covenant under Joshua?

A Its historical significance as a site of earlier covenants (Jacob in Genesis 35) and its central location between the northern and southern tribes symbolized unity and reconciliation. B Its proximity to major trade routes facilitated communication and the dissemination of the covenant's terms. C Its location within the territory of Judah provided a secure and defensible setting for the assembly. D Its abundant natural resources and fertile land ensured adequate provision for the gathered assembly.