Why are bills presented to the president?

Bills are presented to the president because it needs the approved by The House of Senate and the president

1) union forces launched a surprise attack.

2) more confederate troops arrived by train.

3) union forces retreated.

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so.