I have been told to describe the tone of the poem "Then and Now" by Oodgeroo Noonuccal.I don't understand. Please help quickly!

The tone is nostalgic and melancholy. The speaker
remembers a simpler and perhaps more peaceful time before European colonization in
Australia. The boomerang and woomera were Aboriginal weapons: artifacts associated with
this previous period in Australia's history. The speaker affectionately recalls this
time before European colonialization and industrialization. This was a time when people
were freer, more in touch with nature and, according to the speaker,
happier.

This is a common theme in Romantic poetry. The
nostalgia is for a pre-industrial or pre-civilized time when people were concerned with
the simplicity of live: not so concerned with the rapid pace of historical progress.
This historical nostalgia is analogous to the personal nostalgia for the simplicity and
wonder of childhood. This is also a theme common to many Romantic poems. So, this poem
is nostalgic and melancholy.

But its tone is also resentful
because it is a lament about the European colonization of Australia. Noonuccal was an
Australian poet and activist for Aboriginal rights.