To remedy the stability problem, Bohr<span> modified the </span>Rutherford model<span> by requiring that the electrons move in orbits of fixed size and energy. The energy of an electron depends on the size of the orbit and is lower for smaller orbits. Radiation can occur only when the electron jumps from one orbit to another.</span>
She led peaceful rallies for the people.
What was the Open Door policy? The Open Door policy was a statement of principles initiated by the United States in 1899 and 1900. It called for protection of equal privileges for all countries trading with China and for the support of Chinese territorial and administrative integrity.
The Progressive Era was a period of widespread social activism and political reform across the United States, from the 1890s to the 1920s.[1] The main objectives of the Progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and corruption in government.
