What did secret provisions of the Non-Aggression allow for?

Explanation:

In 1939, Germany and the Soviet Union signed a non-aggression pact in which they agreed to divide up

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.