this is when was the first dog tamed. It happened 15000-16000 years ago. you should learn what was the breed of the first dog and where it happened. you should also learn who tamed the dog and why they tamed the dog. This is important because people love there pets so much.
This is world war ar one. It happened 1914 to 1918. You should learn that the axes ( Germany and turkey etc) vs the allies (France and Greact Britain etc). Also who won the war and what they used in the war. It changed America by making us choose a side we allways were the one who did not have a side.
this is word War Two. It happened in 1939. You should learn which hitler wanted to erase Jews. Some Countrys did not agree with him so they rose to help them. This made a War. And after about 15 years the war ended and America won the war. This is important because it changed America because they helped the right side.