The answer would most probably be letter b. unpredictable
The early start of the 1920’s had brought the US to an era of prosperity due to the industrialization of many factories in the US. By 1929, there was a big shift in the economy. The stock market crashed and led to the economic recession in the US.
In 1967, the Northern government attempted to build a Sudanese nation state on a cornerstone of Northern Arab Muslim identity, deliberately ignoring the religious and ethnic diversity of Sudan and led the country into civil war.
