When European nations established colonies in Africa in the late 1800s, they

controlled colonies’ government but gave colonies economic control.
allowed colonies to run their government but held economic control.
exercised complete economic and political control over the colonies.
negotiated with colonies to determine economic and political control.

Explanation:

They set up Imperial governments in the land to  exploit the natural and human resources of the continent.  

Each European  countries involved  aimed to increase its prestige  by accumulating territories in other parts of the world including Africa. By 1900,the Berlin conference to divide Africa brought about nominal control of African territory by Europe. All this was done without the consent of African people.

The European nations basically want cheap labors that they cannot get from their own country..so in search of cheap labors they set up a base at south Africa and stated deporting slaves..

The European nations sought to expand their economies  by obtaining raw materials from Africa which could be transported back to domestic factories and turned into manufactured goods for sale at the expense of the African people.

they are the executive, (president and about 5,000,000 workers) legislative (senate and house of representatives) and judicial (supreme court and lower courts). the president of the united states administers the executive branch of our government.

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion