Giuseppe is an italian trader in the mediterranean who trades goods from the middle east, asia, and other exotic places. why does giuseppe want other european explorers to fail in their search for new routes to asia?

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?