Which nation initially opened its borders, allowing east germans to head west?

Hungary

Explanation:

In 1989, the Hungarian government decreed Hungary–Austria border to be open, making it easier for Hungarians to go to Austria to purchase goods and services that were scarce in their side of the fence.

A friendship picnic held in August had over 900 East Germans, who were on holiday in Hungary at the time, crossed the border, escaping into Austria to then go to West Germany.

it affected it because the kingdoms (with trade) slowly got richer and richer.

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d