Switzerland and the Transatlantic Slavery

Introduction

Switzerland had no colonies of its own - yet there were a number of Swiss involved in slavery, the slave trade, and colonialism activities between the 16th and the 19th centuries. Swiss trading companies, banks, city-states, family enterprises, mercenary contractors, soldiers, and private individuals participated in and profited from the commercial, military, administrative, financial, scientific, ideological, and publishing activities necessary for the creation and the maintenance of the Transatlantic slavery economy. In this project, focusing on the Caribbean Community member states, we are interested in discovering the trace of the colonial past of Switzerland.

Our primary source is the CARICOM Compilation Archive written by Hans Fässler, MA Zurich University, a historian from St.Gallen (Switzerland).

Motivation

The goal is to obtain

• person name
• origin, i.e. location in Switzerland
• colonial location
• date
• activities

fo each actor identified in the CCA. This properties have been validated ad relevant and valuable information by Hans Fassler.

Project Plan and Milestones

Step I : Information extraction with NLP tools(Stanford NER, NLTK)

Step II : Visualize the connection between Switzerland and Caribbean colonies

Step III : Highlight the material traces

Date	Task	Completion
By Week 4 (07.10)	Research on potential project ideas. Initial project ideas presentation.	✓
By Week 6 (21.10)	Study similar projects for possible methodology. Decide on primary sources for this project. Study NLP pipelines and text understanding methods that can be applied to the project.	✓
By Week 10 (25.11)	Contact the author of this archive, historian Hans Fässler, to plan a meeting about the project. Step I Work on extracting name, origin, date, places, and colonial activities from the corpus. Compile a list of slave-ships Step II Decide on how to implement the visualization of the extracted information.	✓
By Week 11 (02.12)	Step I Finish data extraction and clean the data for visualization. Step II Set up a website for visualization, mapping information based on geographic location. Look at pattern in relationship btw colonial and Swiss location over time Step III Compare names from our database with Swiss street names database (if time) Compare names from our database with Dictionary of Swiss History (if time)
By Week 12 (09.12)	Step II Work on visualization, link individual/companies colonial location with origin Add a feature to see only the items with material traces Step III Compare names from our database with Wikidata database Use web scraping to enrich the material traces if low level results with other sources (less than 20% of entities)
By Week 13 (16.12)	Step II Refine website functions based on the feedback from the historian. Overall Assess the approach of the project. Write the report.
By Week 14 (22.12)	Overall Finish project and website, final presentation

Methodology

Text Understanding

First step is to create items;

Then to process to add all the properties mentioned above. tools:

Text processing

Natural Language processing with  tools as NLTK for tokenization and  Stanford NER for Named Entities recognition and BIO taggings.

Levels of confidence

For origin, data and person we calculate an accuracy value that indicates what is the level of confidence we have in the retrieved attribute. Note that there isn't any confidence level for this property as it comes directly from the author and is unambiguous.

Origin accuracy The origin location is found according to the schemes presented above. However, multiple locations exist in the same portion of text thus the actual location that we are looking for might be further away in the text. By counting the total of Swiss cities present in the text we can compute an level of confidence inversely proportional to it.

- TO ADD : is this information relevant here? or limitations?

Overall, we extract 464 text items from the division of the initial page. On this set, 117 items have no person name or location which makes them irrelevant to other dataset (precisely 49 entries have no person defined, 52 entries with no location defined and 16 entries where neither the person nor the location could be defined)

Dataset enriching

We add geographical information, we select the following methods. For country we use capitals geographical coordinates, except fo United States where we select the capital of each states. We have 327 that we can attached colonial locations, however around 133 of them don't have a precise colonial location. We will mention this into limitations.

Limitation

The complete archive has 464 items, i.e. entries about different actors. However, retrieving information such as the name and origin of the actor, as well as his activities and the location of the activities is difficult. The texts can be pretty complex and intricated, 'as were the implications of Switzerland in Black Slavery'[^1].

• David Louis Agassiz (1737­–1807), uncle of the racist and glaciologist Louis Agassiz (1807–1873), was a financier who left Switzerland for France in 1747 with his friend Jacques Necker in order to work in the Parisian branch of the Thellusson et Vernet bank (investments in colonial companies, links with the slave trade). Until 1770, David Louis Agassiz cooperated with Pourtalès of Neuchâtel via the company «Joseph Lieutaud et Louis Agassiz». Necker was to become Louis XVI’s Minister of Finance, whereas David Louis Agassiz left for Britain where he acquired a considerable fortune and anglicised his name to Arthur David Lewis Agassiz. He was naturalised by a private Act of Parliament in 1766. Agassiz dealt in cotton, silk, sugar, cocoa, coffee, tobacco, and cochineal and had business relations with France, Spain, Portugal, Italy, Germany, Belgium, Denmark, the Netherlands, Sweden, Switzerland, Russia, North and South America and the East and West Indies. In 1776, Francis Anthony Rougemont (1713–1788) from a Neuchâtel family joined the partnership under the name of «Agassiz, Rougemont et Cie.», a company which had close ties with «MM Pourtalès et Cie.» from Neuchâtel (ownership of plantations on Grenada, indiennes industry, banking). Arthur David Lewis Agassiz’s son Arthur Agassiz (1771–1866), cousin of the racist Louis Agassiz, took over the family business, and later formed a company «Agassiz, Son & Company». In 1823, Arthur Agassiz was working in Port-au-Prince (Haiti) with «Jean Robert Bernard et Cie.».

Through processing, the number of workable entries is reduced to TO ADD. 1) TO ADD are lost because no origin locations are found

With respect to the above issues the following ideas could be implemented to improve the accuracy:

1)

The second part that transform [^1] Hans Fassler

Links

Github repository: Colonial-heritage-in-Switzerland

Primary source: caricom archives

Secondary sources: Dictionnaire historique de la Suisse DHS, swissNAME3d