Sea floor spreading adds more crust to the ocean floor and at the same time older strips of rock move outward from either side of the ridge.
The development of the calander shows they can divde the number of minutes hours days month etc in a year. Development of the pyramids shows geometry and engineering. look up to make sure.
MAPS ARE CONSTANTLY ADAPTING TO THE INFLUENCE OF WEATHER AND OTHER ISSUES
Answer: ...have obtained independence during post-war period (during 1950s, 1960s and 1970s).
Explanation: we have to include Dutch (Surinam for example), French (Algeria or Vietnam), Belgian (Kongo-Kinshassa) or Portuguese (Angola, Mozambique) colonies. This process included return of white-Europeans colonists back to Europe: the biggest return was that of Algerian French (Pieds-Noirs) and later (not so big) European whites from Portuguese territories (1974-1975-1976).
Weather. This includes factors like temperature, humidity, wind speed, etc.
