This is more of a science question, but ok. You see blue light because in the color spectrum blue passes most easily through things. Hence why the sky is blue. Its the light from the sun filtered out and only blue passing all the way through the atmosphere.
The historical event that the beginning of the Anglo-Saxon period roughly corresponds with is C. the Roman pull-out from Britain.
Both of these happened sometime in the 5th century.
Richard Lawrence, an unemployed house painter, approached Jackson with two loaded guns. Fortunately the guns misfired. Lawrence was mentally unstable and had no connections with Jacksons political rivals. Jackson and his Vice President, Martin Van Buren, was convinced that Lawrence had been hired by the Whig Party, who were opponents of his at the time. Jacksons Democrats and the Whig Party were upset about Jacksons attempts to dismantle the Bank of the United States. Therefore, they could've tried this, but Jacksons suspicious were never proven to be true. Hope this helped! :)
the columbian exchange introduced the Europeans and people in the Americas new types of crops, such as potatoes, sweet potatoes and cassava
