I honestly think that the first headline is biased and oppinionated.
1. in and of.
2. in.
3. to.
4. of.
5. into (off could be a preposition but in this case is part of the phrasal verb 'to send off')
to improve intelligence first the person wants to make people intelligent must be literate and if the people are literate it can be very great because literation leads toward victory and if the people of country are literate the country will be rich because everyone knows where to invest and where to spend money
