Why has natural vegetation declined in areas of North Africa, Southwest Asia, and Central Asia?

What artifact did modern scholars study to them understand hieroglyphics

Martin luther started the protestant movement when he split from the church in 1517. what area of europe was he from?   a.  england  b.  italy  c.  yugoslavia  d.  germany

1. america's first national road morse 2. joined lake erie with the hudson river cooper 3. steam-driven locomotive erie canal 4. allowed businesspeople to keep in touch with trends cumberland 5. telegraph code fulton 6. clermont telegraph