The best option in terms of El Nino would be "<span>the cyclical warming of the Pacific Ocean near the equator," since this weather event is "expected" practically at the same time every year. </span>
One of the reasons why so many Americans were in favor of going to war with Mexico was because "They believed it was <span>necessary in order to gain more territory," since it was clear that Mexico was not going to sell the land voluntarily. </span>
Laborers who had previously worked on farms transitioned to working in factories. Cities became a source of poverty, illness and lacked housing due to the transient volumes
