The right to prótect your invention from being copled for a certain perlod of time is called: A. Ex post facto

B. Eminent Domain

C. Copyright

D. Patent

Why did nikita khrushchev order the construction of the berlin wall? a) to enable workers to travel between east and west berlin b) to divide the communist and democratic parts of berlin c) to relax the cold war tensions created by a divided germany d) to defend the rights of west berliners under soviet control