Para que son los cilindros en un auto

So that they are the cylinders in a car.

Almost every country has citizens that speak spanish but there is no country i know of that every one speaks spanish hope this

These objects represent mayan numerals. just like roman numerals, they are combined to symbolize a numeral and this enabled astronomers, scholars and architects to compute various equations yet it was also used by farmers and traders in their day to day transactions.