A same meaning or not problem:
Scientists believe that amber was deposited during the Upper Eocene and Lower Oligocene in a delta of a prehistoric river , in a shallow part of a marine basin .
Scientists believe that amber was deposited in a flat part of a prehistoric basin in a delta of a marine river during the Upper Eocene and the Lower Oligocene .
****
[A]: no

A same meaning or not problem:
In the November 1856 state elections , 81 Americans , 31 Democrats , and 8 Republicans were elected to the Assembly for the 1857 session .
In the November 1856 state elections , 81 Republicans , 31 Democrats , and 8 Americans were elected to the Assembly for the 1857 session .
****
[A]: no

A same meaning or not problem:
Julia had also told Do privately that she had read their letters to Elinor .
Elinor had also told Do privately that she had read her letters to Juliet .
****
[A]: no

A same meaning or not problem:
In 2012 , the airline carried 57,500 passengers per month to 15 domestic targets and 90,000 passengers on international routes ( around 1.77 million passengers per year ) .
In 2012 , the airline carried 57,500 passengers to 15 domestic destinations and 90,000 passengers on international routes per month ( apx . 1.77 million passengers per year ) .
****
[A]:
yes