Questions

The speed of all the electromagnetic radiation are always   same   and   equal   to   the numerical value 3 x 10^8m/sec.

Bronze is the mixture of is a mixture of copper and tin. The composition is copper is 88% and tin is 12%.

Since, the starting statement carries a subject; the next statement will carry a verb i.e. Q follows as it mentioned the discovery of the Regent. R will bethe continuing statement which states what he actually discovered. P follows next as it talked about the reaction of the Regent after the discovery. And S would be the concluding statement and thus form a coherent paragraph.

The correct formation would be, ‘The Regent having discovered that he had imprisoned an innocent man released Voltaire and gave him a pension.’

The Progressive Movement:

Today, you hear the term ''progressive'' discussed a lot in politics, but progressivism is not a new concept. It was first used to describe policies and interventions of the late 19th to early 20th century, by reformers who felt the need for societal changes.

The first Progressives felt called to action in response to the conditions of poverty, inequality, and corruption that were pervasive during the 19th century.