Answer: Emigrant
Explanation:
A person that leaves their country of origin is referred to as an emigrant. An emigrant moves to another country in order to seek better living standard.
People also move abroad for educational purposes, due to marriage or due to economic opportunities. For example, Africans moved to developed countries in order to seek better opportunities.
Iron tools were used for agriculture. Larger communities pushed into the Ganges river . They used iron tools to cultivate rice.