What british policies pushed the colonies to cooperate with one another

The answer is: The Stamp Act and tariffs on non-english goods

Stamp act force the colony to pay more taxes on paper related products and increasing tariffs on english goods make it very expensive for the colonies to conduct business with other countries. The colonists eventually fed up and decided to work with one another to fight off british influence.

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the geography of greece

led to limited interactions with other cultures in the mediterranean

was rich in natural resources and led to repeated invasions from the macedonians

encouraged greater contact with peoples on the southern and eastern mediterranean coasts

caused the greeks to eventually relocate eastward under alexander the great