What factor led the temporary success of the know nothing party in the United States during the mid 1800s

Explanation:

The know nothing party flourished in he 1850's due to nativist movement,  it grew due to anti-Roman catholic and anti-immigrant sentiment that became Rampant during 1840's.

Rising Irish migration in the East and the Germans in the west posed a danger to the political and economic security of the native born Americans and american values as they were controlled by the pope. This movement tried to curb naturalisation and immigration from 1854-1856 but it couldn't succeed.  

It was known a American party from 1855 onward.  

Historians the collapse of second party system was also the key factor to its success because it gave the opportunity to succeed where the older nativist group failed.  

superior technology and improved medical knowledge to foster imperialism. quinine enabled europeans

to survive tropical diseases and venture into the mosquito-infested interiors of africa and asia. the combination

of the steamboat and the telegraph enabled the western powers to increase their mobility and to quickly respond

to any situations that threatened their dominance. the rapid-fire machine gun also gave them a military advantage

and was in convincing africans and asians to accept western control. the following table summarizes the

causes of the new imperialism:

causes of new imperialism

economic military/political humanitarian/religious technological

need for markets need for military bases white man’s burden new medicine

raw materials national security spread of christianity new weapons

source of investments source of

pride—nationalism

social darwinism

(superiority of western

society)

transportation

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