I will give brainliest What do the Harappan civilization's irrigation networks suggest?

Farmers built different systems that did not connect.
A strong, central authority organized big projects.
The city was unable to build systems that worked well.
Enormous palace gardens were more important than farming.

Why did un coalition troops battle iraqi forces in 1991? iraq had invaded saudi arabia, along with its other border nations.iraq had invaded kuwait, which was a major source of the world's oil.the united nations wanted to remove saddam hussein from power.the united nations wanted to prevent the trade of illegal drugs.