<span><span>Rene Descartes is known
for the Cartesian coordinate system and the belief that mathematics can explain
all of nature. He is the father of analytical geometry (by using algebra
to describe geometry). We often relate to his Cartesian coordinate system in
maps or graphs to know how far along and how far up it is. </span>He
was also the one who invented the representation of unknowns in
mathematical equations by using x, y, and z, and then the
knowns by using a, b, and c<span>.</span></span>
The answer is d: huge numbers of Africans died within a few years of arriving in the Americas. Many Africans who were captured were put in cramped conditions where many of them did not survive the trip. Those who did were sold and were made to work on plantations. Some slaves where whipped if they angered their masters while others died either from over worked or cruelty.
the major periods of chinese immigration (from 1858 to 1923 and since 1947) reflected changes in the Canadian government's Immigration Policy. From 1885, Chinese migrants had to pay a $50 "entry" or "head" tax before being admitted into canada. the chinese were the only ethnic group to pay a tax to enter canada.
1.Stable food
2.Government
3.Technology
4. Religion
5.Writing systems
6.Social structure
7.Arts and architecture
The welcome sign during the 1968 democratic national convention held in Chicago was considered as ironic or sarcastic because it boosts uneasiness to the member of Democrats. Drivers were called a strike, phones and elevators are functioning erratically. The whole area that surrounds the delegates can cause apprehension.
