Reconstruction.
The most sigificant delays were those caused by General Halleck when appointed as Commander-in-Chief of the Union armies in 1862. By wanting to occupy territory instead of destroying enemy forces, he prevented Grant from wiping out the Confederate armies in Tennessee, when it was well within his power.
Slow movement of the Northern armies under Halleck who wanted to occupy vast areas of territory, when Grant was trying to press him to allow quick advances that would destroy the opposing armies. Also, periods of winter retreat, when it was too cold to fight.
Cities of Sumer and Akkad were defeated and captured and some occupied or recolonised.
Part of being a world power during those times...powerful navies (battleships) and widespread colonies. Navies were necessary for projecting armies; no navy meant no army could land on foreign shores.
To invade Pennsylvania, occupy more of the territory surrounding Washington, and defeat Northern armies on their own soil.
Legally, it had no impact, because Louisiana was a member of Confederate States, over which Lincoln and his Proclamation had no authority. As for the prospect of Union armies liberating local slaves, those armies were urgently needed in Chattanooga, and did not occupy Louisiana.
who had the authority to occupy a Federal building.
Yes, during World War II.
Some people welcomed the armies of Islam and even sometimes called them get control of their countries because they understood that armies of Islam were not to occupy lands and to extend the territories under their control but rather these armies were to free the will of peoples of the countries they get control of such that they can believe in the religion they want without oppression of their rulers. Armies of Islam never killed a woman, a child, old man, or any civilian or took their properties. They never destroyed a building or cut a tree or burnt any property or human.
Yes, for 5 years.
It could be converted into a fortification.
Yes