Does the failure of multilateralism play a significant role in the emergence of bilateralism in international investment?

It is a dyadic dataset (country-year) covering the period from 1958-2023. The dataset can be used for analyzing Bilateral Investment Treaties. The dataset was merged from multiple sources using R programming本数据集为采用国家-年份（country-year）观测维度的二元数据集，时间覆盖区间为1958年至2023年。该数据集可用于双边投资协定（Bilateral Investment Treaties）的相关分析。本数据集通过R编程语言（R programming）整合多源数据构建完成。