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.
The Song dynasty used military force in an attempt to quell the Liao dynasty and to recapture the Sixteen Prefectures, a territory under Khitan control since 938 that was traditionally considered to be part of China proper (Most parts of today's Beijing and Tianjin).