True, the US Congress was active in implementing labor related legislations. President Theodore Roosevelt gave importance to the labor unions are needed to help on the collective bargaining agreements between employers and employees. The effects of The Great Depression were hard for the workers, it is a call of their duty to act on it.
The Black Sea and Aegean Sea (Hopefully this is correct!)
Many countries that had become great powers had more powerful allies than others. These allies helped these countries gain more power until they were able to fend for their own. Some countries didnt have as great as allies to help them through the power wars