Citigroup's net income increased to $3.6 billion in the fourth quarter 2016, primarily driven by the lower operating expenses and cost of credit, partially offset by lower revenues. Citigroup's effective tax rate was 30% in the current quarter compared to 29% in the fourth quarter 2015.
Mercosur, or the Southern Common Market, is a customs union between Brazil, Argentina, Uruguay and Paraguay. It was originally set up in 1991. Bolivia, Chile, Colombia, Ecuador and Peru have associate member status. Bolivia may be incorporated as a full member soon.
The terahertz, abbreviated THz, is a unit of electromagnetic (EM) wave frequency equal to one trillion hertz (10 12 Hz).The terahertz is used as an indicator of the frequency of infrared (IR), visible, and ultraviolet (UV) radiation.Download this Pocket Guide to Network Management and Monitoring.he terahertz is not commonly used in computer and wireless technology, although it is possible that a microprocessor with a clock speed of 1 THz might someday be developed.