Why doesn’t everyone have water and toilets yet?

excerpt no exist, excerpt must exist

A huge wealth gap remains between developed and underdeveloped nations across the world.  

Rural areas in Zambia and Mozambique live on a subsistence level and are often too poor to invest in anything but the very basics. While most developed nations enjoy immediate access to water and are well educated in hygiene, safe water is still considered a ‘luxury’ for many poorer rural communities in Zambia and Mozambique and they are the last to receive the access enjoyed by urban areas or forgotten about entirely.