The u. s. federal and state governments are similar because both levels of government have the power to declare war on a nation collect taxes from citizens trade with foreign countries print currency and control banks

most cajuns resided in acadiana, where their descendants are still predominant

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.