Prime Minister Narendra Modi on Tuesday pledged greater engagement with Africa, seeking to build on economic ties that have grown by leaps and bounds in recent years.Talking at the first of a series of annual meetings of the African Development Bank (AfDB) in India, Modi said the country has so far extended 152 lines of credits worth close to $8 billion to as many as 44 African countries. At the third India-Africa Forum Summit in 2015, India also committed $10 billion for development projects in Africa over a five-year period.