Analyze this timeline illustrating one period of the modern era:
1791
1804
1807
1829
1865
1791: william wilberforce
introduces the first bill
in british parliament
to abolish slavery.
1804: the haitian revolution
ends with the total abolition
of slavery in haiti.
1807: the slave trade act
outlaws the slave trade
throughout the british empire.
1829: mexico outlaws slavery after
winning independence from spain.
1865: the united states abolishes
slavery following the american civil war.
which theme does the timeline most reflect?