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 :)
Because they wanted more drastic solutions to problems.
Answer:
A. Through the use of new technologies.
Explanation:
This is my best guess as the Ottoman empire was so great because they concoured neihiboring countries and placing in the religions and laws.
Hopefully this helps!