Complex sentence: Several studies conducted in South Asia and Africa by few scientists during the last decade show that the annual rate of accidents in the sub-continent and dark continent is much higher than that elsewhere thus safety awareness promotion is greatly felt in these regions at present.
Split into simpler sentences: Several studies conducted in South Asia and Africa by few scientists during the last decade show that the annual rate of accidents in the sub-continent and dark continent is much higher than the figures elsewhere. Thus, safety awareness promotion is greatly felt in these regions at present.