Break down the role that the core, semi-periphery, and periphery play in the global economic system and give a basic explanation of how they interact with each other??

Peripheral countries generally provide labor and materials to core countries. Semiperipheral countries exploit peripheral countries, just as core countries exploit both semiperipheral and peripheral countries. Core countries extract raw materials with little cost.

the roman republic began to expand when rome fought the punic wars and defeated carthage. the punic wars refer to the series of 3 wars fought among rome and carthage, before it ended in carthage's defeat.