During westward expansion, the white settlers were following the false idea of Manifest Destiny. Manifest Destiny stated that it was God's plan for them to conquer and settle all of America.
The Civil War was indirectly caused by Westward expansion because It was fought over slavery between the free and slave states. If there had been no Westward expansion, there would have been no separation of the free states from the slave states
The best option would be that "<span>The U.S. imposed a treaty that forced Latin American countries to democratize or face crippling sanctions," since it was never in American's best interest to force the democratization of the region. </span>
All of the bill of rights amendments listed are for freedoms and rights.
Since it was a disease that was spread through the air and animals , it was caused by rat hosts and soon humans.