In the 1930s, germany first began to expand aggressively by

-a. invading russia.
-b. rebuilding the german military.
-c. joining german forces with italy.
-d. making a pact with china.

The correct answer is - B. rebuilding the German military.

In the 1930's Germany started to prepare what was going to be done in the coming years by reforming and rebuilding its military, in order to set a solid basis for further military actions. This was against the deal after the World War I, but the other great powers seemed to think that it is nothing serious if Germany militarizes, and that it will not have any consequences. They were obviously wrong, and they witnessed that in the years that followed, when Germany started a military expansion in order to satisfy its territorial ambitions.

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.