global supply chain - A global supply chain is like a big team of companies that work together to make and sell things all around the world., primary economic activity - Primary activities are jobs where people get things from nature, like farming or mining., secondary economic activity - Secondary activities are jobs where people make things from the stuff they get, like factories turning wood into furniture., tertiary economic activity - Tertiary activities are jobs where people help others or provide services, like teachers, doctors, and shopkeepers., raw materials - Raw materials are the basic things we use to make stuff, like metal for cars or wool for jumpers., manufacturing - Manufacturing is when we use raw materials to make new things, like turning metal into cars or wool into jumpers., services - Services are things people do for us, like fixing cars, selling food in shops, or teaching us at school.,

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