What does spains'coat of arms'mean?

Answer 1

The current Coat of arms of Spain was approved by law [1] in 1981, when the present established replaced the interim version which, in turn, replaced the official arms of Francoist Spain. The coat of arms appears in the Flag of Spain.

The Spanish' coat symbolizes in the shield, the old kingdoms of Spain; the crown, the Constitutional monarchy and the supporters, the Spanish geographic situation.