Which of the following are activity patterns? a. saving c. producing b. investing d. all of the above

d. all the above

Explanation:

All of those can be activities when it comes to activity patterns in economy. You must invest to produce, you must produce to profit, and you must save the profit to invest. This is a cyclical example, but it fits perfectly with the choices provided, creating a constant pattern of making money to make money.

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.