The president : Donald Trump
"The Constitution provides that the president "shall have Power, by and with the Advice and Consent of the Senate, to make Treaties, provided two-thirds of the Senators present concur" (Article II, section 2)."
https://www.senate.gov/artandhistory/history/common/briefing/Treaties.htm
Hope this helps
The Berlin Conference<span> of 1884–85, also known as the Congo </span>Conference<span> or West Africa </span>Conference<span>, regulated European colonization and trade in Africa during the New Imperialism period, and coincided with Germany's sudden emergence as an imperial power</span>
The answer is, D<span>uring the nineteenth century, it was perceived to be undignified for a president to campaign on his own behalf.
Basically, people don't like candidates to campaign for themselves on the things that they have done. Especially in publications where they would want to post for elections which is a selfish act in view of the people especially for a running President. They usually give small speeches in a dignified way.
</span>
A wall dividing communist west Germany and democratic east Germany through the 80s. Ronald Reagan eventually convinced the two countries to tear it down
