There are a number of different traditions which involve the color green, but the most significant one (in terms of countries at least) is the association of green with Islam. Islamic countries such as Saudi Arabia, Iran, Indonesia etc. would consider green to be a sacred color. Here in the western world (where I type) green is more associated with the environmental movement.
Because many countries banknotes have green in their design.
black
"Verde" is the Spanish word for "green".
Despite its name, the green gland is black.
chlorophyll
green
by its color. the color green like an olive.
jade green
lemon juice
green park
turquoise