Explain how World War I and the inventions/innovations of the conflict changed the ways wars would be fought in the future. (Example has the weapons improved/changed since World War I).

Technology affected the way that World War I was fought because it pretty much caused the infamous trench warfare to happen.

The machine gun, especially, made it very easy for defenders to kill large numbers of soldiers who were attacking them.  As long as the defenders were dug in, the machine guns could slaughter advancing soldiers.  At this time, there was nothing that could really allow the offense to maneuver easily around dug in defenses.

So, the machine gun caused defensive, trench warfare to be necessary.  Sadly, the generals still tried to launch attacks and that is why so many people were killed in this war.

Explanation:

they united the colonies in their fight against the british.

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b