יְשִׁמְךָֿ א' כְּאֶפְֿרַיִם וְכִֿמְנַשֶּׁה

Bereishit/Genesis 48:13-14:

And then Yoseif took the two of them — Efrayim in his right, at Yisra’eil's left; and Menashe in his left, at Yisra’eil's right — and approached him [Yisra’eil/Ya‘aqov]. And then Yisra’eil stretched out his right hand, and placed it on Efrayim's head, him being the younger one, and his left hand on Menashe's head; he switched his hands, for Menashe was the firstborn.

There's a lot of emphasis on directions here — Yoseif placing his sons in the proper order, Yisra’eil switching his hands and fouling up Yoseif's preparations... all this 'right' and 'left' side, and 'right' and 'left' hand.

What I find interesting is that we know that 'right' and 'left' in Semitic languages are not just relative directions, but objective directions as well. Avraham tells Lot:

אם השמאל ואימנה
ואם הימין ואשמאילה
If you go left/north, I'll go right/south;
and if you go right/south, I'll go left/north.

We know that there are a number of words for each cardinal direction, and one set is based on directions relative to a human body:

• East is קדם, forwards (assumedly facing the rising sun)
  
• West is אחור, behind, as in הים האחרון 'the Sea Behind' (=the Mediterranean)
  
• North is שמאל, left, and cognate with the normal Arabic word for 'north', شمال (šamāl)
  
• South is ימין, right, as in the place-name Yemen — اليمن (alyaman) in Arabic, תימן in Hebrew

So my point is this...
Ya‘aqov Avinu insists on blessing Efrayim with his right hand and Menashe with his left hand. Correspondingly, within the overall tribal territory of the Children of Yoseif, the tribe of Efrayim receives its tribal territory in the south (right), and Menashe receives its in the north (left)!Coincidence? I think not!
See maps here, here, and here