Costa made the move after corruption investigators searched his residence in connection with a probe into how mineral and energy contracts were awarded.
Lusofonia
International Coal Ventures Limited hopes that a US$150 million upgrade of its Mozambican concessions will double their output.
Years of illegal logging, allegedly facilitated by local middlemen and forestry employees, have cost the nation millions in lost revenue.
The bridge connects central and southern parts of the country and is nearly a kilometre long, with the capability of carrying trucks up to 50 tonnes.
The switch, while potentially risky, could yield significant benefits to the southern African country, IMF officials argue.
The expected growth is part of an overall rise in extractive industry production in the southern African nation.
New data reveals China continues to be the primary destination for oil from the southern African nation.
Plunging water levels expose pre-colonial engravings on the rocks along the Amazon River, near the confluence of the Rio Negro.
Brazil maintains its position as China’s top trade partner among the Portuguese-speaking countries.