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Oliver Wach

@obwach

Research Fellow & PhD Candidate at Freie Universität Berlin | Applied, Econ History, Development, Pol Economy https://sites.google.com/view/oliverwach/home

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20.10.2023
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Latest posts by Oliver Wach @obwach

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THE PRICE OF WAR

"A war of average intensity is associated with an output drop of close to 10% in the war-site economy, while consumer prices rise by approximately 20 percent. The economic ramifications of war are not confined to the war site"

(American Economic Review Vol. 116, No. 3, March 2026)

28.02.2026 16:06 👍 28 🔁 9 💬 1 📌 0
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This book should definitely include a chapter on the 'wesanderson' color palette package for R. Watch out for 'wes_palette("Darjeeling2")'
in my future figures!

05.02.2026 09:33 👍 0 🔁 0 💬 0 📌 0
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In just over eight months, Berlin will hold its 20th state election since 1946. While its well known East West divide in voting behaviour is often attributed to the city’s former split into capitalist and socialist halves, these differences existed even before the city’s division. A thread. 🧵

23.01.2026 07:11 👍 99 🔁 28 💬 6 📌 0
Channukah Book publsihed in 1930 Warsaw

Channukah Book publsihed in 1930 Warsaw

This Chanukah book was published in Warsaw in 1930. Unfortunately, no records of its former owners survive. The Looted Books Project works to reunite looted books with their original owners and descendants. Chanukah Sameach!

19.12.2025 09:13 👍 2 🔁 1 💬 0 📌 0
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On May 5-6, 2026, Humboldt University will host a
#FRESH meeting on The causes and consequences of social conflict

Keynote lecture by Mohamed Saleh (LSE)

Local organizer: Felix Kersting

More details in the below 👇

15.12.2025 14:13 👍 7 🔁 7 💬 1 📌 1
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Leaving Lund after my first World Economic History Congress — what an experience! An incredible location, and inspiring presentations and people. Heading home exhausted but full of ideas. Already looking forward to Uruguay!

01.08.2025 07:42 👍 2 🔁 0 💬 0 📌 0
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The 20th World Economic History Congress in Lund has started - with a keynote of Elise van Nederveen Meerkerk on Work, Race, Gender and Class, #wehc2025 #economichistory #lund #intersectionality

28.07.2025 08:01 👍 9 🔁 1 💬 0 📌 0
Testing Marx: Capital Accumulation, Income Inequality, and Socialism in Late Nineteenth-Century Germany Abstract. We study the dynamics of capital accumulation, income inequality, capital concentration, and voting up to 1914. Based on new panel data for Prussian regions, we reevaluate the famous revisio...

Finally out in print: Testing Marx, with @charlottebartels.bsky.social and Niko Wolf! History of thought with numbers. Have a look: direct.mit.edu/rest/article... (open access)

22.07.2025 13:01 👍 27 🔁 3 💬 1 📌 0

Five things to remember about war:

22.06.2025 04:28 👍 8345 🔁 3724 💬 143 📌 300
WebCam in den Nistkasten der Turmfalken mit 3 Küken

WebCam in den Nistkasten der Turmfalken mit 3 Küken

🐣✨ Neuigkeiten aus dem Fachbereich Veterinärmedizin der #FUBerlin!
Seit 2024 befindet sich am Schornstein des Dekanatsgebäudes ein Nistkasten für Turmfalken, der live per Web-Cam beobachtet werden kann.
Aktuell sind drei süße Küken im Nest!
📹 horst.vetmed.fu-berlin.de

16.05.2025 12:12 👍 16 🔁 3 💬 1 📌 0
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„Anyone who would choose Lithuania as an enemy has also made an enemy of the United States of America“. An inscription in Vilnius from 2002 — one can only hope those words are still remembered.

02.05.2025 10:10 👍 9 🔁 2 💬 1 📌 0
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Canadian PM Justin Trudeau:

"Today, the United States launched a trade war against Canada - their closest partner and ally, their closest friend. At the same time, they're talking about working positively with Russia, appeasing Vladimir Putin - a lying murderous dictator. Make that makes sense."

04.03.2025 16:13 👍 4070 🔁 1380 💬 94 📌 205
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In DC, Polish history isn’t hard to find. On my morning run, I encountered Kościuszko and Pulaski—Polish soldiers of the American Revolution. Their statues near the White House are fitting reminders as we are currently working on polish influence in the U.S.!

04.03.2025 14:38 👍 1 🔁 0 💬 0 📌 0

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03.03.2025 09:19 👍 1 🔁 0 💬 0 📌 0
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03.03.2025 08:34 👍 1 🔁 0 💬 1 📌 0
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To: The future German chancellor To: The future German chancellor From: Economists For Ukraine. If you would like to sign this letter, please fill in this form: https://forms.gle/XMQu4447kgSJ4Wts6 Dear Chancellor, Congratulat...

@econ4ua.bsky.social has drafted an open letter to the future German chancellor, urging Germany to lead by supporting Ukraine in these critical times.
Please fill out the signature form at the end of the document and share this post.
docs.google.com/document/d/1...

20.02.2025 23:35 👍 12 🔁 4 💬 0 📌 1

Between 04-09.03 i will be visiting Washington, DC and between 09-15.03 Boston. Please let me know if you are around want to meet up ☕️

27.02.2025 16:56 👍 4 🔁 0 💬 0 📌 0
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Personality Traits and Cognitive Ability in Political Selection Abstract. A vast scholarship questions whether voters are sufficiently informed to act in their best interest at the polling booth, which may also have imp

🧵 Who enters politics? Are politicians different from the general population? In our @jeeanews.bsky.social paper (M. Jokela, @jannetukiainen.bsky.social, Å. von Schoultz), we study Finnish politicians’ cognitive and personality traits using military conscription test data. 📊

25.02.2025 12:22 👍 61 🔁 25 💬 4 📌 3
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Have you ever wondered how social networks differ by gender?
Check out my team's new dataset, which uses Facebook data to measure regional differences in social networks by gender all across the world!
A 🧵 with examples, a description of our methodology, and a link to download the data:

12.02.2025 21:48 👍 55 🔁 14 💬 2 📌 6

So happy to see this paper published!

14.02.2025 18:04 👍 2 🔁 0 💬 0 📌 0
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🆕 RFBerlin-CReAM #DiscussionPaper by @essobecker.bsky.social, @pdavidboll.bsky.social, and @jvoth.bsky.social: "Spatial Unit Roots in Regressions: A Practitioner’s Guide and a Stata Package" 🧵 (1/4)

23.01.2025 11:13 👍 3 🔁 3 💬 1 📌 0

The deadline for our workshop in economic history with Elias Papaioannou as keynote speaker is approaching fast, make sure to apply!

13.01.2025 07:42 👍 12 🔁 11 💬 0 📌 3
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CEPH is delighted to be co-hosting a workshop titled 'Hidden Connections: Eastern Europe through a comparative lens' alongside the WEast Eastern European Economic History Initiative, including a keynote lecture from @essobecker.bsky.social this afternoon

#econsky #skystorians #econominchistory

13.12.2024 12:45 👍 6 🔁 3 💬 0 📌 2
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Phantomgrenzen: Wo die alten deutschen Grenzen sichtbar werden Preußen und das deutsche Kaiserreich beeinflussen noch immer, wie Menschen heute in der EU wählen. Absurd, oder? Wir zeigen erstmals fünf Phantomgrenzen Europas.

Mal wieder herausragender Datenjournalismus bei @zeit.de :
www.zeit.de/politik/2024...
Übrigens gibt es zu fast jeder hier untersuchten Grenze auch akademische Studien (kleiner Thread):

06.12.2024 10:48 👍 84 🔁 31 💬 7 📌 0
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So happy to host @pbukowski.bsky.social at FU Berlin today! Pawel is sharing an introduction to the history of inequality in Central and Eastern Europe with our students. Looking forward for the conversation and perspectives!

04.12.2024 13:51 👍 10 🔁 2 💬 0 📌 0
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📣 Call for papers for junior (non-tenured) researchers:

Workshop on “The Impact of Immigration and Refugee Inflows on Host Country Economies”, March 6‐7 in Berlin

Keynote: Anna Maria Mayda (Georgetown University)

Submission Deadline: December 20, 2024
#EconConf #Econsky

26.11.2024 08:44 👍 38 🔁 35 💬 0 📌 6

Welcome! It’s nice and cozy here.

23.11.2024 12:57 👍 1 🔁 0 💬 0 📌 0

Exploring @vcharnysh.bsky.social’s papers on Population Transfers with my students, I can’t wait to dive into the full book! Volha argues that these transfers enhanced state capacity in western Poland, offering valuable insights into the debate on regional inequalities in Poland.

22.11.2024 09:17 👍 4 🔁 1 💬 1 📌 0
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🧵 (1/N) One of the most rewarding (= close to my heart) research projects I worked on, honoring victims of the Holocaust, out in latest issue of AEJ:Applied. Short 🧵 on "Persecution and Escape: Professional Networks and High-Skilled Emigration from Nazi Germany"

👉 www.aeaweb.org/articles?id=...

15.09.2024 14:19 👍 55 🔁 22 💬 1 📌 0
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🚨Working Paper Alert 🚨

THE POWER OF COMMEMORATIVE POLICIES: DO STREET NAMES INFLUENCE PEOPLE?

In a recent paper, we investigate through an in-person survey whether street names affect people’s knowledge, opinions and attitudes.
Here is what we do and what we find:👇
[1/10]

05.11.2024 08:19 👍 14 🔁 6 💬 1 📌 2