It has primarily been the socialists and the communists who have believed that workers would overthrow wealthy business owners, since they feel that the current economic system of capitalism is flawed.
The Mexican war led to the capture of Arizona, New Mexico, Texas, and a part of California. Hope this helps.
The lasting effect of religious missionaries in Africa is that they spread Christianity. They established hospitals, clinics and offered modern medicine. They introduced European system of management and styles of dress. The Missionaries opened schools. Also training colleges too. They paved the way for the improvement of agriculture through establishing farms where new crops and better methods of farming and equipment were introduced. Furthermore, the missionaries fought slave trade. They also destroyed local industries like craft industries which were replaced with European products. Moreover, some African religions were lost to Christianity.
The countries that attended the conference were: Austria-Hungary, Belgium, Denmark, France, the German Empire, Italy, Netherlands, the Ottoman Empire, Portugal, the Russian Empire, Spain, Sweden-Norway, the United Kingdom, and the United States of America who had a special right to accept or decline the terms of the deal and the participation in the deal.
The effects of the conference were mostly in regards to the African Continent. They wanted to find a way to spread their empires and gain strength while not fighting each other, so they decided to cut Africa up into smaller pieces and divide it among themselves. The result was that 90% of African territory was taken by various European powers.