Revolt of the Outworlds

Alan Tremaine knew Mars received its water via the space-warp from Venus. If this life-line were cut it meant war—and mankind's destruction!
Amplifiers swelled the clarion call of the trumpet above the keening Martian wind which swept into the great central plaza of Syrtis Major City. Two hundred thousand outworld citizens, the entire population of Syrtis, huddled together in the cold and watched the blue and gold banner of the Outworld Federation run up the pole to flutter proudly beside the globe-and-stars flag of Earth.
There was a tremendous roar from the crowd as Alan Tremaine climbed the long flight of steps leading to the platform in the center of the plaza. It's really my father they're applauding , Alan Tremaine thought. The elder Tremaine, dead these two weeks, had made the dream of independence a reality for the Outworlds. Then, on the eve of success, he had been struck down by a still unknown assassin. Alan had been rushed from New Washington University on Earth by the Outworld Federation, to bring the magic name of Tremaine to the ceremony on Mars.
Above him now, Alan could see the military governor of Mars, Lieutenant General Roderick Olmstead, waiting alongside the banks of huge television screens which showed similar scenes on Venus, on Saturn's great moon Titan, on the four large Jovian satellites. But the eyes of all the Outworlds were here on Mars as Alan Tremaine mounted the platform to accept the Declaration of Sovereignty from the governor.
A hush descended on the crowd as General Olmstead unrolled the scroll and held it before the television cameras. On behalf of the government of Earth, he said, his voice booming across the Syrtis plaza on the amplifiers, I present this Declaration of Sovereignty to the people of all the Outworlds. The five hundred million citizens of Mars, Venus, Titan and the Jovian Moons will hereafter march alongside the peoples of Earth in Equal Union.
Two hundred thousand voices rose in a thunderous peal of acclaim.