A push factor is a flaw or distress that drives a person away from a certain place. A pull factor is something concerning the country to which a person migrates. It is generally a benefit that attracts people to a certain place. Push and pull factors are usually considered as north and south poles on a magnet.
Answer: D. " To Prevent Flooding"
Adopted aggressive flood-control tactics to protect their new settlements.
Explanation:
New settlers adopted aggressive flood-control tactics to protect their new settlements from inundation. Rather than only settling those lands less susceptible to overflow, the new frontiersmen also reclaimed lands well within the floodplain and constructed levees to protect them.
Mary MacKillop
Together with the Reverend Julian Tenison Woods, she founded the Sisters of St Joseph of the Sacred Heart (the Josephites), a congregation of religious sisters that established a number of schools and welfare institutions throughout Australasia, with an emphasis on education for the rural poor
This was called the Great Trek