Speaking at the prestigious London School of Economics (LSE), Manjhi also described Bihar as the fastest developing state in India.
He rejected claims that economic growth had slowed down as a result of the Janata Dal (United) breaking its alliance with the BJP before the general election earlier this year due to the party's opposition to the choice of Narendra Modi as prime minister.
"To strengthen and sustain this growth story we need cooperation and I am here to say that all foreign investment is very welcome. Skilled and unskilled labour leaving the state has been a black spot for us and to keep them we need to create more jobs and opportunities and that is where foreign investment comes in," added the JD(U) leader, who addressed the audience in Hindi.
The chief minister made an impassioned plea for the international community to stand by Bihar as it attempts to regain its "glorious past" and called for advanced research in the field of agriculture and small-scale enterprises to help its rural areas break out of poverty.
He highlighted a range of "techno-managerial strategies" employed by the state government over the last eight years to bring Bihar on the path of self-reliance.
