a ambos lados del Altántico

= on both sides of the ocean, on both sides of the Atlantic

Ex. In the period between the copyright legislation of 1891 and that of 1957 resetting remained the normal practice on both sides of the ocean.

Ex. The policy and legal questions on both sides of the Atlantic are remarkably similar.

* * *

= on both sides of the ocean, on both sides of the Atlantic

Ex: In the period between the copyright legislation of 1891 and that of 1957 resetting remained the normal practice on both sides of the ocean.

Ex: The policy and legal questions on both sides of the Atlantic are remarkably similar.