Primary source is an artifact, a document, diary, manuscript, autobiography, a recording, or other source of information that was created at the time under study.
Grain is used to feed cattle and livestock because it is healthy, cheap, ethical, and easy to grow in some American climates. Grain is the easiest and most cost-efficient way to feed livestock.
The two consequences of the California Gold Rush is it had an severe environmental impact. Another consequence was the rivers were clogged with sediment.
Profiting from the rivalry between the Maharaja and the Zamorin , the Portuguese were well received and seen as allies, getting a permit to build a fort (Fort Manuel) and a trading post that were the first European settlement in India.
I think the United States help Western European countries regain their economic strength in order to hold off the threat of communism by initiating the Marshall Plan.
