World war 1 began on 28 July 1914 and ended on 11 November 1918, so the years when WW1 lasted were 1914, 1915, 1916, 1917, 1918 it lasted exactly 4 years 3 months and 2 weeks :)
Depending on the exact time, most native american populations declined due to wars with the British and Americans. Diseases and epidemics would also take many lives at that time. Hope this helps.
<span> I know France in particular had a hard time securing coal, which is one of the reasons they would come to exploit Germany so badly after the first World War. I also know that Britain made the export of textile machinery illegal until the mid 1840s. Regarding feudal agriculture, well, well landlords of France certainly treated the peasants as serfs well into the 18th c., which led of course to the French Revolution.</span>
Trueeeeee( I had to put the extra e's because Brainly would not alow me to post 4 letters)