Historia

East Germany joined West Germany on October 3, 1990 through a constitutional shortcut built for absorbing territory, not a merger of equals; three and a half decades on, the wage and wealth gap it left behind still has not closed.

The treaty that dissolved the German Democratic Republic used the fastest legal path available, and Germany has spent thirty-five years finding out what that shortcut cost.

At midnight on October 3, 1990, the German Democratic Republic stopped existing. It did not merge with the Federal Republic to form something new. It joined it, the way a state joins a country that already has a government, a currency, and a constitution, because that, legally, is exactly what happened.

What actually happened at midnight

Five states (Brandenburg, Mecklenburg-Vorpommern, Saxony, Saxony-Anhalt, and Thuringia) had been reconstituted only weeks earlier, reviving borders East Germany abolished back in 1952. Under Article 23 of the Federal Republic's Basic Law, they acceded to West Germany as new Länder. East Germany's own institutions, its parliament, its currency, its citizenship, simply stopped applying.

Hundreds of thousands of people gathered outside the Reichstag in Berlin to watch it happen. At the stroke of midnight, a black-red-gold flag went up on a temporary wooden pole, the Liberty Bell in the Rathaus Schöneberg was rung, and the national anthem played. Chancellor Helmut Kohl, who had spent the year assembling the legal and financial machinery of unification, became the leader of a country nearly a quarter larger than the one he'd run the day before.

None of that was spontaneous. It was the last step of a process with a paper trail.

Why October 3, and not some other date?

The date itself was a choice, made by East Germans, for reasons that had nothing to do with drama. The Volkskammer was the GDR's only freely elected parliament, seated after the country's first and last free election that March. On August 23, 1990, it voted to set October 3 as the day of accession. Eight days later, West Germany's interior minister Wolfgang Schäuble and the GDR's state secretary Günther Krause signed the Unification Treaty in Berlin: 45 articles settling everything from property claims to which laws would survive the transition.

That treaty answered the domestic question. It didn't answer the international one.

Under postwar arrangements, the United States, the United Kingdom, France, and the Soviet Union still held formal rights over Germany as a whole, a legal hangover from 1945 that neither German state could unilaterally erase. Untangling it took the Two Plus Four Treaty, negotiated through 1990 and signed in Moscow on September 12 by the foreign ministers of both German states and all four wartime Allies. The four powers suspended their occupation rights effective the day Germany reunified, October 3, restoring full practical sovereignty then; formal ratification of the treaty itself was not complete until the following March.

Chancellor Kohl had secured Soviet leader Mikhail Gorbachev's assent to that outcome two months earlier, at a meeting in the Caucasus that Kohl later called decisive. Gorbachev's willingness to let a united Germany join NATO, rather than sit neutral between blocs, is one of the more consequential single decisions of the late Cold War, and historians still debate how close it came to not happening.

Was this reunification, or something else?

Here the word itself gets awkward, and the disagreement is not just semantic.

In the spring of 1990, West German lawmakers argued over which constitutional path to take. One option, Article 146, would have dissolved the Basic Law entirely and let a joint constituent assembly write a new charter for a genuinely new country. The other, Article 23, simply let East German territory join the existing Federal Republic under its existing rules. Critics warned at the time that Article 23 amounted to annexation in slow motion; supporters countered that it was faster, cleaner, and avoided reopening settled questions about West Germany's institutions.

Article 23 won, decisively, because it was available and Article 146 was not: writing a new constitution from scratch in months, with a currency crisis already underway, was never a realistic option. But the choice meant East Germany's laws, courts, and civil service were largely replaced rather than blended, and the word "reunification" has always sat a little uneasily over that fact for people who lived through it as the more one-sided process it actually was.

What did Kohl's 1990 promise actually deliver?

In a series of televised addresses that summer and fall, Kohl told East Germans that a shared currency and shared institutions would soon turn their region into "blühende Landschaften," a blossoming, thriving country: prosperous within a few years and, he pledged on the campaign trail, without new taxes on the West to pay for it.

The prosperity arrived unevenly, and the bill was real: estimates of the total public transfer to the former East since 1990 run into the trillions of euros, funding everything from highway reconstruction to pension guarantees. The Treuhandanstalt, the agency charged with privatizing East Germany's state-run industry, sold or shut down thousands of firms and eliminated roughly two-thirds of the jobs those industries had carried, a dislocation whose speed is still argued over by economists who broadly agree the alternative, propping up uncompetitive plants indefinitely, would have failed too.

Is Germany actually one country now?

Legally, without question, and has been for thirty-six years by the time this is published. Economically, the record is more stubborn than the ceremony ever promised.

As of 2025, full-time workers in eastern Germany earned roughly 21 percent less than their western counterparts, a gap the German Trade Union Confederation puts at about €13,400 a year, and the wealth gap runs wider still: the Bundesbank's most recent household survey found median net wealth in the east at less than a third of the western figure. Eastern unemployment remains higher, union coverage lower. None of that is disputed; how much of it reflects reunification's design versus forty-five years of a planned economy that preceded it is where researchers genuinely split.

That economic memory has a political afterlife. Support for parties positioned against the postwar consensus, most visibly Alternative für Deutschland, runs consistently higher in the former East than the West, and researchers who study the pattern connect it, at least in part, to the abruptness of 1990 and the sense of institutions imposed rather than built together.

October 3 is now Germany's national holiday, the Tag der Deutschen Einheit, rotating each year among the sixteen state capitals. It marks a date on which the legal question was answered overnight. The rest of the question — what a country owes the half of itself that joined it on someone else's terms — is still being worked out, one federal budget at a time.

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