They were called ξένοι(pronnounced 'xe-ni').
Additional information:
In Ancient Greece, everyone was expected to treat foreigners with respect. They would welcome them as guests, treat them to a meal and wash their legs. After that, they would ask them questions about who they were, and then let them stay at their house for the night. The next day, they would bid them farewell and give them presents.
GREECE
The slaves were foreigners,because some Greeks were uncomfortable owing other Greeks.
The fear of foreigners is called xenophobia.
Well if your talking about Athens the Capital of Ancient Greece - Women, criminals and slaves couldn't vote but in Sparta Women could.
Everyone but male citizens - women, foreigners, slaves.
Women, slaves, foreigners, resident aliens.
Videshi.
Xenophobe
The people that are from Greece are called Greeks.
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China
Metics