The Nile river had a big impact on trade because it served as a source of transportation. Communities formed along the Nile were more developed.
Salt from the desert was a reliable and profitable resource traded.
Savannas were used to grow crops and the excess from the crops were traded.
This is false. What you described are the meridians. Parallels are from based on north and south, starting from the middle. The main parallel is the equator which divides the Earth into two hemispheres, northern and southern, with increasing numbers towards the poles.
The “blank check” is an infamous episode in the history of the First World War; the first truly fatal error made by Germany – a promise of unconditional support for whatever action Austria-Hungary might take to punish Serbia.
