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Using port-to-port commodity flow data, I find that routes where both ports have RORO trade 23% more than predicted by the individual effects alone. I also propose an interaction event study to investigate the dynamic effects and find evidence that these effects show zero pretrends and have positive dynamic effects. I embed these estimates in an Eaton-Kortum model with island geography and show that complementarity generates a superadditivity premium, implying coordinated port investments dominate sequential upgrades.", "occurrence_notes":null, "guid":"151812-21912220@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151812", "building_id":"1005177", "building_name":"North Quad", "campus_maps_id":"553", "room":"4325", "location_name":"North Quad", "has_livestream":0, "cost":"", "tags":["Economics","International","seminar"], "website":"http:\/\/www.lsa.umich.edu\/econ", "sponsors":[ { "group_name":"International Economics", "group_id":"3550", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_151812_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/09\/event_151812_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/09\/event_151812_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/09\/event_151812_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/09\/event_151812_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/09\/event_151812_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/09\/event_151812_original-1.png" }, "occurrence_count":1, "first_occurrence":21912220 } , "151563-21911767": { "datetime_modified":"20260904T095932", "datetime_start":"20260924T113000", "datetime_end":"20260924T125000", "has_end_time":1, "date_start":"2026-09-24", "date_end":"2026-09-24", "time_start":"11:30:00", "time_end":"12:50:00", "time_zone":"America\/Detroit", "event_title":"Wealth Dynamics and Path Dependence", "occurrence_title":"", "combined_title":"Wealth Dynamics and Path Dependence: Brian Daza, University of Michigan", "event_subtitle":"Brian Daza, University of Michigan", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"This paper studies wealth dynamics and capital allocation under different trade regimes and shows that trade integration can make specialization history-dependent even when sectors have the same long-run productivity potential. 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I implement a quantitative analysis using data from Peruvian firms, households, national accounts, tariffs, and international trade to quantify how initial wealth allocation shapes sectoral specialization and how domestic and foreign trade policies affect its persistence.", "occurrence_notes":null, "guid":"151563-21911767@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151563", "building_id":"1005177", "building_name":"North Quad", "campus_maps_id":"553", "room":"4325", "location_name":"North Quad", "has_livestream":0, "cost":"", "tags":["Economics","International","seminar"], "website":"http:\/\/www.lsa.umich.edu\/econ", "sponsors":[ { "group_name":"International Economics", "group_id":"3550", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_151563_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/09\/event_151563_original-1.png", 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