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Helicopter
a thing THAT/WHICH can fly
space
a place WHERE star, planets, and galaxies are found
rocket
a thing THAT / WHICH flies into space
machine
a piece of equipment THAT / WHICH uses power to do a job
tool
a thing THAT / WHICH people use to build or fix things
history
a time WHEN things happened in the past
story
a thing THAT/ WHICH we tell people or read in books
site
a place WHERE something happened
president
a person WHO is the leader of a country
tribe
a group of people WHO live together and share the same customs and language
survivor
a person WHO lives through a dangerous event
historian
a person WHO studies and writes about history
prehistory
a time WHEN writing hadn't been invented yet
invention
a new thing THAT / WHICH has been created
population
all the people or animals WHO live in a place
introduction
invasion
an event WHERE/WHEN an army attacks another country
Inhabitant
a person WHO lives in a particular place
record
something THAT/WHICH shows the best or highest achievement
Survival
an ability THAT / WHICH keeps you alive in a dangerous situation