In the poem laura, what aspects did laura remain unchanged?

The correct answer is the love Francesco Petrarch felt for Laura and Laura's beauty.

Explanation:

Francesco Petrarch (1304-1374) was an Italian lyricist and humanist whose love poems to his beloved idealized Laura had a big impact on the Renaissance (approx. 1300-1600). In his poems, he expresses his feelings towards Laura, who unfortunately for Petrarch, doesn't share the same feelings towards him. He describes Laura's beauty and how deeply in love he is for her and how even with the past of the time that does not change.

invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.

we need to see the examples!