# data[].attributes.headline
innovation-the process of intruding new methods

# data[].attributes.subject
innovation-the process of intruding new methods

# data[].attributes.headline
treaty-a formal agreement between two or more nations

# data[].attributes.subject
treaty-a formal agreement between two or more nations

# data[].attributes.headline
irrigation-to supply (land) with water as by means of artificial ditches

# data[].attributes.subject
irrigation-to supply (land) with water as by means of artificial ditches

# data[].attributes.headline
windmill-a mill operated by the wind's rotation of large vanes radiating from a shaft

# data[].attributes.subject
windmill-a mill operated by the wind's rotation of large vanes radiating from a shaft

# data[].attributes.headline
stampede-a sudden head long rush or flight as of a herd of cattle

# data[].attributes.subject
stampede-a sudden head long rush or flight as of a herd of cattle

# data[].attributes.headline
technology-the science of the practical or industrial arts

# data[].attributes.subject
technology-the science of the practical or industrial arts

# data[].attributes.headline
ranches-a large farm for raising cattle,horses,or sheep

# data[].attributes.subject
ranches-a large farm for raising cattle,horses,or sheep

# data[].attributes.headline
barbed wires-wire with barbs at close intervals

# data[].attributes.subject
barbed wires-wire with barbs at close intervals

# data[].attributes.headline
settlement patterns-the spatial distribution of where humans inhabit the earth

# data[].attributes.subject
settlement patterns-the spatial distribution of where humans inhabit the earth

# data[].attributes.headline
urbanization-the process of increasing human settlement in cities

# data[].attributes.subject
urbanization-the process of increasing human settlement in cities

# data[].attributes.headline
commercial agriculture-the practice of growing surplus crops to sell for profit

# data[].attributes.subject
commercial agriculture-the practice of growing surplus crops to sell for profit

# data[].attributes.headline
subsistence-the practice growing enough crops to provide for one's family group 

# data[].attributes.subject
subsistence-the practice growing enough crops to provide for one's family group 