South Africa said it will submit a revised offer for a US trade deal in an attempt to lower the 30% tariff rate imposed on exports from Africa’s biggest economy. The duty, which came into effect on Aug. 7, is the highest tariff imposed on a sub-Saharan African country.

The government of Africa's biggest economy has tried for months to negotiate a U.S. trade deal but failed to reach agreement before Trump's deadline.

South Africa is warning that 30,000 jobs are threatened by Trump’s tariffs. The latest unemployment figures show that the country’s unemployment rate rose for the second quarter in a row—and now stands at 33.2 percent. South Africa already has one of the highest jobless rates in the world.