Federalism allowed different states to experiment with different ways to do freeways, so we can see what works. It also allowed states to do highways differently based on the qualities of the state.
Ukraine’s medium strike with drones has gotten really good. This makes it hard to get supplies and reinforcements to the front and forces personnel and equipment further from the front line, increasing traveling time, which creates: delays, wear and tear on vehicles, and more vulnerable road time.
Pharaoh Akhenaten demoted all the gods of Egypt and commanded that only one god is worthy of worship–the disc of the sun. And, only Akhenaten could speak for that one worthy god. This could be seen as a precursor of monotheism. It wasn’t yet monotheism though, because Akhenaten didn’t deny the existence of other gods, just their worthiness of worship.