Answer:
The great wall of china helped protect the land from outsiders. It also helped the army keep watch on intruders.
Explanation:
If you have ever seen the movie Mulan, at the very begining
the army is keeping watch on the wall and when the bad guy comes up the wall, the guards warn the other guards that there are intruders invading China.
Sorry if this doesn't help :(
Answer:
I'm pretty sure the last one is correct.
Explanation:
He wanted to be the first in the space race, and to get ahead and do something no one else would think of.
The correct answer is true
One factor was barbed wire. As farmers and ranchers wisened up, they used the wire to fence in their cattle, destroying the use of cowboys, and taking away one aspect of the "wide open west". Herds of cattle took over the plains and destroyed the grass. In 1883 the big drought struck and water streams dried up and prairie fires grazed. Also the barbed wire and the natural disasters.
