How can you tell that the story was written around a hundred years ago?

The diction of this quote tells us something about when the story was written. Note the words "dodo" and "inferior races".

And before we judge of them too harshly we must remember what ruthless and utter destruction our own species has wrought, not only upon animals, such as the vanished bison and the dodo, but upon its inferior races. The Tasmanians, in spite of their human likeness, were entirely swept out of existence in a war of extermination waged by European immigrants, in the space of fifty years. Are we such apostles of mercy as to complain if the Martians warred in the same spirit?

What kind of a person is the narrator?

How would you adress the Martians and what do you say? we can assume the Martians speak english.

Imagine that you are one of the Martians. Write a letter, giving your first impression of Planet Earth. You can assume the martians speak english