¿Cuál actividad económica introdujo el intercambio colombiano en la cultura sudamericana? A La cría de ganado
B Cultivo en terrazas
C Construcción del ferrocarril
D Cultivo de tabaco

i disagree that there is little difference between adult female development and adult male development. sociological studies comparing female and male pathways to adulthood, revelead that there are sustancial differences between them. particularly, female and male differ from timing of marriage, when they began to live with children and the likelihood of combining wife/husband and parent roles.

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.

are there any options?