To India My Native Land

To India My Native Land is a typical Deroozian poem in its theme and style. The poem laments the degradation and devaluation of India because of her slavery to the British and seeks to regain India’s lost glory and reverence.
The poem begins with a grief-stricken utterance My country! that reverberates throughout the poem. The poet, with a heart brimming with sorrow, grieves over the lamentable and nightmare scenario of present India. India is trodden under the British feet. 
* My country!
The profound patriotic fervor of the poet finds expression in this passionate address.
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Apostrophe is rhetorical device that addresses things which are personified; absent people or abstract ideas. Apostrophe is often used to convey extreme emotion.
These are examples of Apostrophe from Shakespeare: 
"O happy dagger! This is thy sheath; there rust, and let me die." Romeo and Juliet
“O, pardon me, thou bleeding piece of earth….” Julius Caesar

Derozio personifies India as a Divine Goddess. India is considered as a female figure since we always relate to our country as mother and in India we refer to our country as Bharat Mata (or Mother India).
* in thy days of glory past: in the past when India was full of glory
In the past, India had a rich cultural, spiritual and literary attribute: she was full of glory and was admired and reverred all over the world. India was regarded highly by all but now, because of her subjugation to the British imperial intentions, she has lost all her glory and grandeur.
* a beauteous halo
Halo: a circle of light surrounding the head of a holy person in a painting or a sculpture.
The phrase underscores the divine and stellar status that India enjoyed in the past. She was worshipped as a deity, as a goddess.
º       The poet resorts to the figure of speech Metaphor to compare India to a deity.
Metaphor is a figure of speech in which two things are compared omitting like or as.
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