The correct answer is that the ghettos were ethnic neighborhood that provided familiarity. This means that the people were surrounded by other people of their culture and they could practice their culture or their religion how they saw fit without having others mess with it or meddle with it.
Polk was a massive supporter for Manifest Destiny, so an encouragement for expansion was something he definitely wanted. Not to mention the conflict over Texas with Mexico. Even more so, the conquest of California was a dream for many Americans, something that was theirs to be taken and that would lead the U.S to expand into the Pacific, and Polk was a big supporter.
"a proposal by a german official that mexico attack the US"
The months of July and August
The flooding was important because it brought fertile soils down the Nile valley which helped boost agriculture.
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The Electoral College should remain the same for various reasons. First, if it were not for the Electoral College, large states, such as California, would largely control the nation. The Electoral College is designed to maximize states' rights. For example, if the U.S. were a direct democracy, Hillary Clinton would have been elected as our president, even though approximately 90% states supported Trump. With the Electoral College, each state has 2-3 Electors for each Political Party. If the majority of the state votes for Hillary, the democratic electors for that specific state get the vote. If the majority of the state votes for Trump, the Republican electors get the vote. The system is designed to maximize sates' rights and avoid impulsive, mass decisions.