AoE4 - How To Place Walls Without Getting Frustrated [3 Placement Constraints Explained]

A look at three constraints imposed when placing walls that do not exist when placing other buildings, which are the cause of many 'red' walls that simply will not place on an open stretch of terrain.
Save 12% on AoE4: https://www.greenmangaming.com/games/age-of-empires-iv-pc/?tap_a=1964-996bbb&tap_s=2247110-96db87