Tropical rainforest receive over 100 inches of rainfall per year. Most types of forests can support large populations of plants and animals; however, tropical rainforests support the greatest number of species of any other type of biome on the planet
Savanna is essentially grassland interspersed with trees. It is sometimes found in temperate climates, usually in areas that are transitional zones between grassland and forests. However, savanna is mostly found in tropical regions of the world where the climate changes in a seasonal pattern from cool and dry to hot and dry and then to warm and wet before starting the cycle again the following year.
One of the reasons was the blocked transportation routes, another was they were giving so many materials to the army to win they put aside their other business to focus on that
