1 2 3 4 1 _ _ _ _ 2 _ _ _ _ 3 _ _ _ _ 4 _ _ _ _ ACROSS 1) the complete duration of something 2) a caustic substance produced by heating ____stone 3) the largest continent with 60% of the earth's population; it is joined to europe on the west to form eur____; it is the site of some of the world's earliest civilizations 4) something determined in relation to something that includes it DOWN 1) a blow from a flat object (as an open hand) 2) a city in tuscany; site of the famous leaning tower 3) an independent ruler or chieftain (especially in africa or arabia) 4) clean or organized ** Scroll down for solution. ** Are you sure you want to peek? span lime asia part