Please help Which of these were results of the arm race? Check alll that apply world tensions increased

More-destructive weapons were created.

People felt confidence in the future.

Nuclear energy was.
developed as a power source.

European unity was achieved.
ICBMs were developed.

How did the theory of social darwinism impact immigrants? it inspired in the immigrants pride that they were able to survive the harsh conditions of their home countries to come to the united states. it demonstrated that immigrants were the most suitable candidates for factory work because they were the most likely to immigrate to rural areas. it encouraged assimilation of immigrants into the american culture through education that involved courses in english and american food and clothing. it provided new american immigrants with a clearly defined social support system to ensure that basic nutritional, educational, employment, and health care needs were met.

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?

How are the republican and democratic presidential candidates chosen? a. they are nominated by their state governments. b. each is nominated by his or her respective party. c. each is chosen by the governor of his or her home state. d. they are chosen by the house of representatives.