Answer:
The Germans used mustard gas for the first time during war in 1917. They outfitted artillery shells and grenades with mustard gas that they fired in the vicinity of the troop target.
Answer:
Social contracts can be explicit, such as laws, or implicit, such as raising one's hand in class to speak. The U.S. Constitution is often cited as an explicit example of part of America's social contract. It sets out what the government can and cannot do.
Well disease spread out to the native groups, causing them to die, which i think let the British get the land. they wanted to take over land and let the people transfer to christianity. but unfortunately most died so yeah.
i hope this helps a bit :)
