Misc: A terrapin is a type of _________?

Questions

In early 1939 what country was Adolf Hitler determined to invade & occupy?

In greek mythology, what god was thrown down from Mount Olympus because of his ugliness?

In Greek mythology, who wanted to remain unmarried until she was defeated in a footrace?

In Greek mythology, who was the father of Electra?

In Irish folklore what is the mischievous elf, often believed to have treasure hoard?