The way that federal legislation since the 1980s reflected American concerns about potential negative effects of international migration was: <span> it has increased requirements for migrants seeking citizenship
The abundance amount of migrants will increase the total welfare expense that the country has to spend and will pretty much shrink the potential jobs available for our own citizen. As a response for that, we regulate the citizenship process and only allowed the migrants that would increase our economic capabilities.
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Lockouts were tactics that was not used by trade Unions.
Lincoln let the Confederate leaders know about his plan to resupply Fort Sumter so that they would not demand fire on the ships carrying supplies.
Answer
Mesopotamia
Explanation
Mesopotamia is a region between the two rivers Tigris and Euphrates in western Asia. They depended on annual flooding to produce a constant surplus of food because the floods brought silt which was very fertile to the lands and it contained the minerals required by the soil and the nutrients which helps the plants to be more productive.
Also in Egypt floods along the river Nile helped farmers in good production of plants because it carried black soil to their farms which was very fertile.
