Where was the first transcontinental railroad completed?

Promontory, Utah

What martial art developed from Japanese jujutsu focused primarily on throwing techniques? What game includes cars with blue and pink pegs to represent family members? Which ancient empire built the famous Ziggurats in Mesopotamia? Which planet is known as Earth's sister planet due to its size and mass similarity? Who was chosen as president by the House of Representatives after an electoral tie in 1800?