No. There are over 1,000 Bamboo species that grow almost everywhere in the world. The only two places in the world with no native Bamboo species are Europe and Antarctica.
china
No.
Bamboo grows in all continents except Antarctica.
Bamboo.
Not a thing. Koalas do not eat bamboo. Bamboo is not even native to Australia. Koalas feed on eucalyptus leaves. They cannot and do not use bamboo in any way.
Bambusa tulda is the scientific name for Bengal bamboo. It is a species of bamboo native to the Indian subcontinent.
The arrival of the Europeans did not affect the native americans in Mexico.
While not specifically from Mexico, sunflowers are native to the Americas.
China
bamboo
Sure. Lot's of bamboo. There are some native species but not comercially usable. The most known kinds of bamboo were brought here by the asians, specially Japanese.
Poinsettias, Mexican marigold flowers and dahlias are native to Mexico.