Imply means to communicate an idea or feeling without saying it directly.
Anita probably said: "I'm hungry, I would like to eat something cold". Or maybe she said: "It's been months since last time I've eaten an ice cream!" In those ways, she suggested eating an ice cream without saying it literally.
C - Most developing countries are involved in trade with countries around the world; around the world at best traditional civilizations interacted with bordering societies or civilizations
Europeans wanted to but more slaves they thought it was the only way to conquer their enemies