Complex sentence: The initiative created large--scale timber plantations, popularized as "man--made forests," that acted as a stimulus to the timber and wood economy, water and forestry problems that Egypt is facing, and lastly as a beautification process of the country.
Split into simpler sentences: The initiative created large--scale timber plantations, popularized as "man--made forests," which act as a stimulus to the timber and wood economy. Additionaly, the plantations answer the water and forestry problems that Egypt is facing, and also function as beautification process of the country.