I NEED HELP ON THIS QUESTION IT IS FOR MY MODULE EXAM AND I NEED HELP ON IT SOO PLZZZ HEELP FAAAST In one theory, what led humans to move north into Europe?
An Ice Age started and the planet got colder.
An Ice Age ended and the planet warmed up.
Humans were starving and needed more food.
Humans invented boats and could sail to Europe.

“[the city’s engineers excelled in areas] neglected by the greeks, such as the construction of roads and aqueducts, and of sewers that could wash the filth of the city into the tiber. they have built paved roads throughout the country, leveling ridges and filling up hollows, so as to make possible the movements of heavily loaded wagons. . and such is the quantity of water brought in by the aqueducts, that veritable rivers flow through the city and its sewers: almost every house has cisterns, waterpipes, and copious fountains.” —strabo, as quoted in empires ascendant: time frame 400 b.c.–a.d. 200 cisterns are tanks that hold water until it is needed; if a house has a cistern, it is likely to also have a. aqueducts. c. a swimming pool. b. a fish pond. d. sinks and faucets.