The Earth has not been invaded. Any invasion of Earth would have to be from beyond Earth, and would therefore be from space.
Probably sometime in the Garden of Eden...or during Noah's Flood. I don't think anyone realy knows.
Homosapiens. They were the first "persons" on Earth.
Alkaline earth metals are in the second group. Be is the first metal of them.
Albert Einstien was the first to detect the presence of magnetic field in earth
The caveman were one of the first
No one has tried to invade Earth, apart from in movies.
The first animals to enter land were the invertebrates, followed by some fish which later evolved into amphibians.
personally i believe that the first people made were adam and eve but of course God probably walked on earth first and he did make other animals but its one of those
No one knows! Look out of your window and birds, squirrels, rabbits (wild animals) are probably to be seen. I can safely assume that the first persons to discover wild animals were the first humans to walk the earth in the early stone age.
Pokemon
Unicellular plants and animals were first forms of life on Earth
Plants came first in the evolution of life on Earth, appearing before animals.
Tamerlane invaded India, but he wasn't the first to invade. The first person to invade India was Shun Johan. So Shun Johan was the first to invade India.
the first invaders ever to invade rome was the huns!!
If you mean animals as in insects (arthropods), they came in around the Devonian period of the Paleozoic era If you mean animals as in fish, amphibians etc then they came in at the same time as the arthropods
Dinosaurs was the first animals living on earth,but died years ago.
who was the first country to invade in world war 2