Answer:
Westward expansion meant that the US acquired ever increasing amounts of land, and needed people, farmers, to settle there so it could maintained without a huge military presence. This led to massive immigration in the second half of the 19th century, as mostly Europeans came here seeking to finally have their own land.
It also added vast resources to the United States, both in terms of potential agricultural production and things like gold, silver and timber.
It stimulated the construction of the Transcontinental Railroad, and added new states to the country.
It further aggravated the divide between north and south, and accelerated the onset of the Civil War.
Explanation:
Answer: a. Heavy rain and thunderstorms followed by lighter stratiform precipitation.
Explanation:
In their order of severity, thunderstorms range from single-cell, multi-cell, squall line, supercell, bow line to Mesoscale Convective systems (MCS)
. An MCS, therefore is a serious weather condition.
A Mesoscale convective system is an organized, group of thunderstorms with a wide geographical coverage and can last for hours. It can come with hail, flash floods, lake effect snow and trigger disasters such as tropical cyclones.
A. 500,000 indigenous people living in Brazil.
In urban areas, there are more people, therefore not a lot of farmland. (that eliminates C) If city buildings don't allow flood waters to recede, that could be dangerous in many ways. (So A is still a reasonable answer) If most cities are built in flood zones, there should be some form of shelter if houses aren't safe. Pollutants and diseases being carried in water are already dangerous, but easier to spread with rapid flood waters that are sweeping everywhere. So your best answer would be either A or B.
