The article proves that despite a significant growth in the service sector in recent years, industry remains the main engine of economic growth. Moreover, using the analysis of statistical data, it is shown that the development of industrial complexes of countries of the world is accompanied by corresponding structural changes, which in turn determines their economic development in general. The study aims to solve the following issues: which structure of the national industry can be considered progressive under modern conditions, i.e., can lead to progress and sustainable socio-economic growth; whether there is a correlation between the progressive structure of the country's industry and its economic development and the quality of life of its population; how the approach of the country's industrial structure to its progressive state influences the country's economic development and quality of life of its population. The purpose of the study is to justify or refute the hypothesis about influence of progressiveness of the industrial structure on sustainable economic development and quality of life of the population. The main methods used in the study are cluster analysis and integral assessment. The statistical basis of the study is the data on inter-branch balances for 36 countries of the world for 2009, 2011 and 2014. The results obtained in the study allowed confirming the hypothesis about the positive influence of approach of the industrial structure of countries of the world to its progressive state on the sustainable economic development and quality of life of their population. This conclusion can be considered as the basis for forming the state policy of the world's countries to develop their economies and improve the quality of life of their population.

The article proves that security of the national economy characterizes the ability of the country to withstand the destabilizing effects of various internal and external threats and to ensure its sustainable development. The study is carried out in the following stages: Diagnosing threats to security of the national economy → assessing the level of economic security of countries of the world → clustering countries of the world according to the level of economic security → modelling the impact of the national economic security on sustainable economic development of a country → forming measures to ensure security of a country’s economy. The basis for assessing the level of economic security of a country is a hierarchically constructed system of indicators, including composite, complex, and sub-indicators. The assessment of the level of economic security is carried out on the basis of international indices and rankings. The analysis of the correlation between the level of GDP per capita and individual indicators included in the composite indicator of economic security made it possible to identify those that should become the primary concerns of governments in order to enhance economic security as well as increase the level of GDP and ensure sustainable development of countries.

The economic stability of the company’s business processes was monitored, especially during the period of implementation of the benefits of sustainable development, which will attract new investment flows and ensure economic security. A conceptual model for monitoring the economic stability of the company’s business processes has been developed. A methodical approach to monitoring the economic stability of the company’s business processes by influencing the financial, personnel, marketing, innovation, production components depending on the qualitative and quantitative characteristics of available resources is proposed.

Today, the most important factor which determines the development of the world economy is economic globalization. The article presents a scheme of the interdependence of the processes that determine competitiveness of the country in the context of globalization: CER.1 -the cause-effect relation reflecting the influence of M&A with the participation of national companies on concentration of a national economy; CER.2 -reflecting the impact of concentration of the national economy on its competitiveness; CER.3reflecting the impact of intensity of M&A with the participation of national companies on their capitalization; CER.4 -reflecting the impact of the level of national companies' capitalization on competitiveness of the country. The article puts forward and proves, based on the confirmation of the above mentioned cause-effect relations, the following hypotheses: 1. -merges and acquisitions with the participation of national companies influence concentration of a national economy which in turn determines the level of its competitiveness; 2.integration with the participation of national companies through implementation of M&A increases their market capitalization, thereby affecting the level of competitiveness of the country. For simulating, the correlation and regression modeling is used. The statistical base of the study comprises a sample of 42 countries of the world.

The creation of a single competitive EU energy market is aimed at establishing a fair price in the integrated market space. However, electricity markets in European countries remain rather fragmented, and the marginal pricing method, which is the basic one used in the market, conditions a persistent price dispersion in the search for market equilibrium. This study examines the dispersion of electricity prices in 40 bidding zones in 26 European countries by means of quartile analysis. The geographic orientation of the markets, direction of electricity flows, and structure of electricity generation are considered as the causes of this dispersion. In the study, the geographical boundaries of the electricity markets are determined using the methods of correlation analysis of prices and transitive closure of commercial electricity flows. This makes it possible to single out highly integrated, moderately integrated, poorly integrated, and non-integrated markets. Using cluster analysis, electricity markets are classified according to the structure of electricity generation and direction of flows, with the identification of five clusters based on the dominant type of generation and three clusters based on the dominant direction of electricity supply. For each factor under investigation, the intragroup price dispersion is established. The results of the study have allowed to build a three-dimensional matrix that provides for determining the directions of changes in electricity prices when moving between its quadrants.