Which two political ideas were the most influential in 19th century western europe?

 CONSERVATISM and LIBERALISM

Details:

In the 19th century, "conservative" and "liberal" were first coming into vogue as terms for political viewpoints. What "conservative" and "liberal" meant then was different from what those terms mean in politics today. 19th century conservatives wanted to conserve and preserve the historic traditions of government and society. For societies like France and elsewhere on the continent of Europe, that meant going back to monarchs in control of government, as things had been before the French Revolution. Liberals were those who favored liberty for individuals, with greater rights and freedoms. So the various answers that spoke of voting rights, elected parliaments, and democratic change -- those all were measures favored by liberals in the 19th century, not conservatives.

Here are some further points of distinction between the views of 19th century conservatives vs. 19th century liberals:

CONSERVATISM -

LIBERALISM:

union blockade

explanation:

the union blockade in the american civil war was a naval strategy by the united states to prevent the confederacy from trading.

the blockade was proclaimed by president abraham lincoln in april 1861, and required the monitoring of 3,500 miles (5,600 km) of atlantic and gulf coastline, including 12 major ports, notably new orleans and mobile. those blockade runners fast enough to evade the union navy could only carry a small fraction of the supplies needed. they were operated largely by british citizens, making use of neutral ports such as havana, nassau and bermuda. the union commissioned around 500 ships, which destroyed or captured about 1,500 blockade runners over the course of the war.

the answer is aristophanes comedies.