No, you can't get a Pokemon that is level 1 even from Eggs. They turn out to be level 5. And you can't possibly get a level 1 in the wild either, so no it isn't possible.
No,that is not actually possible.
the answer is level 20
By cheating
The weakest Pokemon at the Pokemon League are at Level 40. The Strongest Pokemon you'll face is at Level 50.
Mt. Silver. It has the highest level wild Pokemon and has the trainer red whom has Pokemon level 80 - 88. After that the next toughest area is the Pokemon league
The exact level depends on which Pokemon it is.
How did you get a Latios in Pokemon Silver? It isn't available in Pokemon Silver, because Pokemon Sapphire, Ruby, and Emerald wasn't out that then. Besides Latios doesn't evolve.
The highest level Pokemon you can catch is Lugia, which is level 70. You can find other high level Pokemon at Mt. Silver.
get one pokemon to level 100
train, or rare candy
There is no level 1,000 in the Pokemon games. The highest possible level for a Pokemon is level 100.
The highest possible level a Pokemon can be is level 100. In earlier games, you could use glitches or a cheating device to get Pokemon up to level 255, but that's not possible normally.