Because they wanted to expand there territories
Canberra is the only one of those cities that is not coastal.
A simple need to "point the finger" led to Hitler's beliefs being spread. After WW1 Germany was left in a horrible state and the citizens were looking for someone to blame. This is when Hitler comes along spewing his anti- Semitic agenda and every desperate for a leader and someone to blame for their hardships follows Hitler without question.
English settlers main hope was to gain land in the new world that they could use for farming. This would enable them to make money from selling crops. They would then pass the land to their sons keeping the family prosperous.
There were other settlers that left to escape persecution (mostly religious persecution).
