approximately 1L runs at 2kms depending on the weight of load or cargo
Probably a mixture of metals that contains 10% of silver.
The Spore galactic code is a diplomatic treaty signed by all space-faring empires which is similar to the International Space Treaty or the Geneva convention. You break it by using a WMD, like the planet buster or the gravitation wave. If you break it, any empire within a 10pc radius will declare war on you, including allies but excluding the grox (who get a +50 relationship bonus, unless the WMD is used against them.
When WW2 ended, Korea became a divided nation. The US and Soviet Union had withdrawn most of their troops from Korea. The Soviets gambled that the US wouldn't defendSouth Korea. So The Soviets supplied North Korea with tanks, airplanes, and money in an attempt to take over the peninsula.