**2. Materials and Methods**

The overall objective of this paper is to provide comprehensive research about the topic, with the processing of international and relevant literature in a literature study. Food security, nutrition and livelihood security is connected at the global and national level as well. Thereby, they are a ffected with the risk of so-called "shocks" such as climate disasters (drought, flood, etc.), human conflict (such as war, radical protests, etc.), pests and diseases (such as invasive species, etc.). Multi-sectoral cooperation is essential because most of the studies have shown that only a few countries have achieved fast economic growth without preceding agricultural growth. The development of food production systems is based on agricultural diversification, the conservation of water sources and e fficient land usage while biodiversity is being preserved.

Qualitative research is suitable for exploring results and situations from previous relevant research and comparing with our research. However, methodological examination regarding the data analysis process is limited, but there are no systematic rules for analyzing qualitative data. Of course, there must be a logical structure or a framework behind the analysis. Computer-assisted search engines make qualitative data analysis more e fficient and faster. Qualitative research often provides results, insights and concepts rather than data analysis methods to assess hypotheses or theories. The economic impact of food security is analyzed by various, relevant studies, but there is a close relationship between the environmental and social e ffects (like water and soil management, climate change, energy security). In addition, upon preparing the study a combination of the following terms was applied during the

search for relevant studies: food security, agriculture, population growth, food and environmental safety, food demand, yield trends, change in land use, biofuels, sustainability requirements, and mitigation of climate change. These relevant studies were mostly analyzed from Google Scholar, AgEconSearch, EconBiz.de and Scopus. The literature review is based on recent, relevant studies between 2005 and 2019. In every case, the latest database of the World Bank [12] and Food and Agriculture Organization of the United Nations (FAO) [13] was analyzed during the creation of this study. In some cases, the databases have been merged, e.g., for the exchange of currencies, the harmonization of units of measurement, the frequency of communication. These circumstances were harmonized with each other, so that there was no need to "beautify" the database. Based on these databases, we covered some of the major related results to gain insight into the complexity of these processes. Graphic representations can help readers to better understand the results. Data from the previously mentioned databases were analyzed by R Studio. This program supports the graphic appearance of the analyzed data. Comparing the results is di fficult, since most of the results can be viewed as crude approximations of the future developments. We rather focus on the trends related to food security.

### **3. Results and Discussion**
