Answer:
The use of machine guns resulted in massive casualties
Explanation:
On the western front, soldiers dug into trenches and would stay there until they were ordered to cross "no man's land". It was called this because of the machine guns, barbed wire, mines and the open field they had to get through to make it across.
Nobody wanted to cross no man's land because a single machine gunner could pin down and dispatch many soldiers in a short period of time. This resulted in long stalemates where neither side wanted to cross.
Attempts were made from the late 1st century to the late 3rd century to establish the church in the Iberian peninsula. Canons of the Synod of Elvira (circa 30 in rome5 AD) indicate that the church was greatly isolated from the general population even at that time. The situation of the Christians in Iberia improved with the advent of the Edict of Milan in 313 AD, after which Christians were more or less free to practice their religion openly new religion within the Roman Empire. Over the course of the 4th century, the church built significant footholds particularly around Seville, Cordoba and Toledo.
Pollutants on its surface caught fire and attracted media attention... hope it helps :)