What were some reasons for the fall of the Song Dynasty?

A large bureaucracy and constant warring were costly. The army was run by civilians and became ineffective.

The army was strong, but a large bureaucracy and constant warring were costly.

The army was strong, but the enemy's technology was more advanced.

Many of the emperors made poor treaties with the enemy.

Why do countries create guidelines and laws on how a country is going to be run?

“well,” he says, “there’s excuse for picks and letting-on, in a case like this; if it warn’t so, i wouldn’t approve of it, nor i wouldn’t stand by and see the rules broke—because right is right, and wrong is wrong, and a body ain’t got no business doing wrong when he ain’t ignorant and knows better. it might answer for you to dig jim out with a pick, without any letting-on, because you don’t know no better; but it wouldn’t for me, because i do know better.” the meaning in this excerpt is

What did afolf hitler name his german empire?