Proof , uncirculated, and commemorative coins are all considered what?

Which of the following is a claim about ancient rome that a historian could build san argument around

What race did the soviets win in 1957?

When gandhi reached the arabian sea at the end of the salt march, he picked up raw salt from the water and made a declaration: “with this, i am shaking the foundations of the british empire.” how do you think this quotation is symbolic of gandhi’s works and philosophy?