Today, which of the following ethnic groups has the biggest impact on australia’s culture?
asian
african
hispanic
european

The correct answer is - European.

Australia is a country that is considered as part of the so called Western World. The country has been conquered and settled mostly by people from the British Empire. Because of that, Australia has its basic cultural traits connected with the British, with some unique changes over time as the country developed of course. Also, there's a slight French influence in the culture as well, so we can easily say that the culture in Australia is primarily European based culture.

In the past century there has been migration from multiple other countries, but most of those countries were European countries too, so there's just a mixture of European influences.

since there isn't any suggested answers i will give you the reason and hopefully you can figure it

south africa, or rather all of africa, has not been in the location in which it is nowadays throughout the geological past. after the super-continent pangaea started to break apart, gondwanaland, in which was africa, moved further south, and parts of it came to be very close to the south pole. because the climate in this part of the world is very cold due to the very dispersed sun rays in there, what is now south africa, started to freeze, and the conditions were right for the formation of glaciers. the glaciers existed up until the period when gondwanaland started to break apart and what is now africa started to move towards north, sp it warmed up and the glaciers melted.