The above system of United States Constitution is showing three organs of the state i.e Legislative branch, Executive branch and the Judicial branch.
And below each division, their works are given. Aswecan were that, each of the organ is at same height which shows that they are practicing equal powers and they don't interrupt in each others work.
They practice the system of <u>Checks</u><u> </u><u>and</u><u> </u><u>Balances</u> to ensure that none of the organ is enjoying and grabbing too much.
So, the most appropriate option is:

Checks and balances system.
And, we are done !!
#CarryOnLearning...
<u>━━━━━━━━━━━━━━━━━━━━</u>
There are many important contributions of ancient Rome to modern western civilization, but perhaps the best option from this list is "A. <span>network of long-distance paved roads"</span>
Answer:
C. 25%
Explanation:
Before entering the civil war, confederates states tried to spread a propaganda that only 1% of Southerners own slaves. But, According to the census that conducted by the US government 1860, around 25% of southerners own slaves.
Not a lot of them were being put in plantation as workers (usually only wealthy business owners can afford this). Most of slave owners at that time own slaves as an equivalent of a housemaid. They helped with the chores, taking care of stables, cook, etc.
The correct answer is: "Mexico would get Texas, Arizona, and New Mexico"
Arthur Zimmerman (1864-1940) was the State Secretary for Foreign Affairs of the German Empire during 1916 and 17. He is mostly known because of the secret communication he sent to Mexico during WWI, in January of 1917, called the Zimmerman Telegram.
He aimed to propose and alliance between Germany and Mexico, as a measure of prevention in case the United States decided to join the war. The proposal offered to Mexico that they would recover their former territories of Texas, Arizona and New Mexico.
The communication was intercepted by the British intelligence bodies, and caused the opposite effects to the desired ones. It enraged the US, that ended up declaring the war to Germany in April 1917.