+1037 (MXXXVII) was a [Common Era](/wiki/Common_Era) year that witnessed significant political shifts in Europe. Most notably, the crowns of Castile and León were united under [Ferdinand I](/wiki/Ferdinand_I). This era marked a continuing development of kingdoms within the [Medieval Period](/wiki/Medieval_Period).
+## See also
+- [Year](/wiki/Year)
+- [11th Century](/wiki/11th_Century)
+- [Europe](/wiki/Europe)
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