When speaking of the two czech brothers, the author says, their parents, like mine, had not had the courage to sell everyting and emigrate while there was still time. why would it have ben courageous to have emigrated early on?

it would have required believing the unbelievable and sacrificing a comfortable life.

Ghana, first of the great medieval trading empires of western africa (fl. 7th–13th century). it was situated between the sahara and the headwaters of the sénégal and niger rivers, in an area that now comprises southeastern mauritania and part of mali.