Questions

It was the Qing Dynasty, who was a Manchu.

Hence, it was " the manchus" whose ruling ended after 1911 chinese revolution.

Longitude is the measurement east or west of the prime meridian.

Longitude is measured by imaginary lines that run around the Earth vertically (up and down) and meet at the North and South Poles. These lines are known as meridians.

Samuel Gompers was a leading proponent of workers' rights. He was the first president of the American Federation of Labor, an organization that represented skilled workers from many different industries. Gompers advocated using collective bargaining or negotiations and strikes to gain greater rights for workers.