The blank closed for a few days in 1929 to prevent more panicked selling

The New York Stock Exchange closed for a few days in 1929 to prevent more panicked selling!

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44

the us constitution is a living document, meaning that it can be changed over time as the country changes.