What is the meaning of immigrant haritage?

Immigration (derived from Latin: migratio) is the act of foreigners passing or coming into a country for the purpose of permanent residence. Immigration is made for many reasons, including economic, political, family re-unification, or the wish to change one's surroundings voluntarily.

Natural heritage, an inheritance of fauna and flora, geology, landscape and landforms, and other Natural Resources

Cultural heritage, the legacy of physical artifacts and intangible attributes of a group or society: man-made heritage