1840s

From the top to the left, in the sense of the needles of the watch: the American intervention in Mexico was a conflict that marked the beginning of the American expansion on its western border, paving the way for new territories (and finally states) like Texas and California; the Treaty of Waitangi in 1589 resulted with the establishment of New Zealand as a British colony, symbolizing the growing power of Britain and the expansion to new reaches, particularly in succession This publication would create a revolutionary change in political ideologies and thinking about the centuryXX.influencing entire states such as the Soviet Union, China and Cuba; The revolutions of 1848 spur European politics and cause multiple sociocultural changes, particularly in classical music, arts and politics.