In the 2010s, a similarity between US policies toward Cuba and Libya is that -they were designed to improve trade relations.
-they were designed to stop nuclear testing.
-they were intended to support democracy.
-they were intended to stop terrorist groups.

Which physical feature minimizes population density in northern africa?

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste