Short version: Over population by 2040 causing famines round the world, food production being the new 'oil', by this time more modern and efficient forms of fuel are used for electricity. Countries that are rich in food production and vast arable land, not oil will be the new worlds strong ecomonies. So China (stable after good population control) and USA being the main 2. Countries like UK, France and Germany decline as too dependent of service industries and oil rich countries now will decline due to other means of energy production so will become more dependent of food production countries.
India's population will explode but while food production here is high it won't be able to sustain itself due to bad population control.
Countries like Ukraine with it's vast fertile land will become a lot stronger via international investment and low population growth (currently it's declining) and food exports by 2055.
2060 the world will be more sustained but more investment will be put into space exploration.
Hmm, pie.
