The term "death march" was probably coined by concentration camp prisoners. It referred to forced marches of concentration camp prisoners over long distances under guard and in extremely harsh conditions. Hope it helps:)
Woodrow Wilson asked for a declaration of war against Germany in 1917 to make the world "be made safe for democracy".
It looks like it shows erosion of water being there from the past.
In general, it’s talking about rock erosion.
Did you get a response yet?