In XX century Poland declared war only once. On which country?

Germany
Japan
Ukraine
USSR
Poland declared war on Japan on 20th December 194 as most of WW2 allies. Though Empire of Japan refused to accept a state of war due to friendly relations between the two countries. Despite that legally the state of war lasted until 8th February 1957. It might be the longest war without any clash.
smyru
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Correct this question
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Very interesting!
reach: rather country specific20th centuryhistory of PolandPolandwars

Answers by country

Germany
Japan
Ukraine
USSR
answers
flagFrance
0%
94%
0%
5%
17
flagBelarus
9%
80%
9%
0%
31
flagItaly
10%
78%
0%
10%
19
flagAustria
15%
76%
0%
7%
13
flagthe Netherlands
16%
75%
8%
0%
24
flagSpain
18%
74%
7%
0%
27
flagRepublic of Ireland
7%
71%
10%
10%
38
flagGreece
20%
65%
5%
10%
20
flagGermany
9%
61%
11%
17%
96
flagPoland
19%
55%
15%
8%
16252
flagAustralia
23%
53%
0%
23%
26
flagSweden
16%
50%
25%
8%
12
flagLithuania
17%
47%
5%
29%
17
flagthe United Kingdom
30%
42%
16%
10%
179
flagUnknown
42%
42%
14%
0%
14
flagthe United States
32%
39%
13%
12%
137
flagUkraine
31%
31%
18%
18%
16
flagIndia
30%
30%
19%
16%
36
flagCanada
24%
24%
8%
32%
25