In 390 BCE the Gauls under their leader Brennus attacked Rome. In the battle of Allia 390 BCE Gauls defeated Roman army. After that they attacked the city of Rome. The Romans retreated to the Capitoline and watched the destruction of their city. The Gauls burned Rome and left only after being payed 1,000 libres in gold.
Answer: An invasion by the Gauls.
The California Gold Rush began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California. The news of gold brought approximately 300,000 people to California from the rest of the United States and abroad.
The correct answer is A. While the states are free to make their own laws they cannot make laws that violate the constitution. For example a state cant legalize murder.