1) Richness 
• (n.) The state of being extensive; wideness; largeness; extent; diffusiveness.
Ex·ten'sive·ness noun The state of being extensive; wideness; largeness; extent; diffusiveness. 
extensive, extensively, extensiveness 1. Having great extent; covering a large area; vast. 2. Having a wide scope, power, effect, influence, etc.; far-reaching; comprehensive.
noun large or extensive in breadth or importance or comprehensiveness; `the might have repercussions of unimaginable largeness`; `the very extensiveness of his power was a temptation to abuse it`