UnScramble this Word: r t e d p e e?

Questions

how tall was napoleon?

which painter drew early ideas for a helicopter?

who was the pilot in the first fatal plane crash?

what boy time-travelled with mr. peabody in the 'rocky and bullwinkle' cartoon?

at the height of its power, in 400 b.c., this greek city had 25,000 citizens and 500,000 slaves.?