Why would people and or businesses care what the economy do in the near future?

When analyzing the election of 1876, what conclusion can be drawn? a.a majority of northerners wanted to enforce reconstruction policies more stringently.b.if tilden had won the electoral votes from louisiana, florida, or south carolina, he would have been elected president.c.the republican party had increased its support in the south.d.rutherford hayes did poorly in the western states.e.the republican party did a good job protecting the voting rights of african-americans in mississippi.

What is it called when countries build lots of weapons to store and them in case of a war?

Whether or not a given study has the possibility of causing harm to participants: