The preamble of the constitution was a introduction to the Constitution's<span> fundamental purposes and guiding principles.</span>
Tu debes de mirarlo en el Internet y te contestan ahi
Answer:
In 1930, the same year that Farnsworth was granted a patent for his all-electronic TV, his labs were visited by Vladimir Zworykin of RCA, who had invented a television that used a cathode ray tube (1928) and an all-electric camera tube (1929).
Answer:
A partir de la Revolución Industrial y de la competencia por la obtención de materias primas, las naciones imperialistas entraron en una etapa de rivalidad que desembocó en un nuevo Colonialismo, dando origen a la Primera Guerra Mundial.
Explanation:
Expansión imperialista
