How did warfare change during ww1 then during this time ie guns, chemical warfare, plane, strategies

World War I marks one of the greatest jumps in warfare in human history.

The reason for this is that World War I was the first world war after the industrial revolution really hit its stride. So, advances in technology were able to be translated into the battlefield causing a massive loss of life at the hands of chemical weapons, aircraft, tanks, and more.

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.