Spain hoped to spread Catholicism in its American colonies.
An inherent problem in using secondary sources of data is that the data might have been manipulated a bit
The answer to this question is 40-60% ; 25%
Other estimation is based not based on the raw intellegence possesed but rather based on whether they could use the intelligence for real life purpose. Studies shows that even though young adults already fully developed the capability for formal operational thinking , onle a quarter of them actually got used to doing it.
