Misc: From where to london was the first commercial boeing 747 flight?

Questions

evidence of ---------- exists as early as 10,000 b.c?

evidence of shoemaking exists as early as ---------- b.c?

if a family had 2 servants or less in the u.s. in 1900, census takers recorded it as ---------- middle-class?

if we had the same ---------- rate as in the 1900s, more than half the people in the world today would not be alive?

in 1778, fashionable women of ---------- never went out in blustery weather without a lightning rod attached to their hats?