B. Pioneering research on radioactivity. She discovered Polonium and Radium, and won the 1903 Nobel Prize.
The executive departments were created by the United States Congress to manage specific areas of national and international affairs, and several departments are responsible for the administration of federal laws. The heads of the fifteen departments are elected by the President and approved with the advice of the Senate.
By 1910 what percent of the population immigrating to the united states was made up of southern and eastern Europeans
70 percent
The positive effects of getting California is that it's closer to Asia, and California side of the nation at the time could have open territory to conquer.