Ancient Greece was the birthplace of Western civilization with influential ideas in democracy, science, and philosophy. Greeks lived in mainland Greece and islands, engaging in farming, fishing, trade, and soldiering. The Trojan War began when Helen was taken to Troy, lasting 10 years until the Greeks won through trickery. Life was difficult with scarce resources, but Greeks established the first Olympic Games and had a pantheon of gods led by Zeus they believed watched over them. Theater and pottery flourished as art forms depicting Greek life and myths.