22. A historian would find this document most useful for (1) Investigating why Germany won World War I
(2) Comparing militarism in European countries in the early 20th century
(3) Examining the effects of WWII on military spending in Europe
(4) Determining military spending in the United States in the early 20th century

Hello. You forgot to place the document that should be analyzed. The document is attached below.

(2) Comparing militarism in European countries in the early 20th century

Explanation:

The chart below lists military expenditure expenditures between several European nations during the years 1880, 1900 and 1914. This document is of great historical importance, and may even help us to draw some conclusions about the directions that Europe took during the first World War.

For a historian, this document would be of great value, since it would be possible to compare militarism in European countries at the beginning of the 20th century.

is this a question? put a question ?

it affected it because the kingdoms (with trade) slowly got richer and richer.