1 GoToMeeting video conferencing suite charges $49 per month, with no long-term commitment. 2  Its fixed annual plan costs $39 per month, with a one-year commitment yielding a 20 percent discount, for an annual cost of $468.3  MegaMeeting is a competitor that requires no downloads or installation. A broadband Internet connection is a necessary upfront cost for those without at least DSL service. 2  At a minimum, video conferencing can be accomplished with an inexpensive webcam, a microphone or headset, and a simple knack for camera composition and audio.
Songhai became independent of Mali, and rivalled it as the leading power in West Africa. Culture, Religion and Monarchy. The Songhai had settled on both banks of the middle Niger River. They established a state in the 15th century, which unified a large part of the western Sudan and developed into a brilliant civilisation.
According to the change of the territory and capital, Song Dynasty was divided into Northern Song (960 â 1127) and Southern Song (1127 â 1279). In 960, Zhao Kuangyin, the commander of the Imperial Guards serving the Later Zhou Dynasty (951 - 960), seized power through a coup in Chenqiao (Chenqiao Town of Henan Province). Then, he established the Song Dynasty and made Dongjing (currently Kaifeng City of Henan Province) the capital.