1. Why was the system of military alliances that existed in Europe prior to WWI problematic? It resulted in a naval war as nations fought over trading rights with Asian markets.
It resulted in many nations becoming bankrupt in order to support massive standing armies.
O It resulted in an economic depression arising from military blockades of non-allied nations.
It resulted in pulling one nation after another into a conflict between Serbia and Austria-Hungary.

O It resulted in an economic depression arising from military blockades of non-allied nations.

Explanation:

Seems the most accurate. Hope this helped.

valentina tereshkova

soviet cosmonaut valentina tereshkova became the first woman to fly to space when she launched on the vostok 6 mission june 16, 1963. valentina tereshkova was the first woman to go into space. in 1963, she spent almost three days in space and orbited earth 48 times in her space capsule, vostok 6.jan 22, 2018